From patchwork Wed Mar 4 20:25:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michal Kubecek X-Patchwork-Id: 1249219 X-Patchwork-Delegate: linville@tuxdriver.com Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=suse.cz Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48Xlkl5Cjpz9sPF for ; Thu, 5 Mar 2020 07:25:51 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388317AbgCDUZu (ORCPT ); Wed, 4 Mar 2020 15:25:50 -0500 Received: from mx2.suse.de ([195.135.220.15]:33660 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728482AbgCDUZu (ORCPT ); Wed, 4 Mar 2020 15:25:50 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id AE2A2ADFE; Wed, 4 Mar 2020 20:25:46 +0000 (UTC) Received: by unicorn.suse.cz (Postfix, from userid 1000) id 597EBE037F; Wed, 4 Mar 2020 21:25:46 +0100 (CET) Message-Id: <82b0d11b47550431e01cd7009a668674545df754.1583347351.git.mkubecek@suse.cz> In-Reply-To: References: From: Michal Kubecek Subject: [PATCH ethtool v2 14/25] netlink: partial netlink handler for gset (no option) To: John Linville , netdev@vger.kernel.org Cc: Andrew Lunn , Florian Fainelli Date: Wed, 4 Mar 2020 21:25:46 +0100 (CET) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Partially implement "ethtool " subcommand. This commit retrieves and displays information provided by ETHTOOL_MSG_LINKINFO_GET, ETHTOOL_MSG_LINKMODES_GET and ETHTOOL_MSG_LINKSTATE_GET netlink requests, i.e. everything except wake-on-lan and debugging (msglevel). Also register the callbacks in monitor so that corresponding notifications can be displayed with "ethtool --monitor". v2: - print banner only once unless monitor or wildcard (dump request) - suppress error messages for -EOPNOTSUPP responses - only show "No data available" if there is no reply at all - more readable nl_gset() Signed-off-by: Michal Kubecek --- Makefile.am | 1 + ethtool.c | 1 + netlink/extapi.h | 3 + netlink/monitor.c | 16 ++ netlink/netlink.h | 4 + netlink/settings.c | 647 +++++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 672 insertions(+) create mode 100644 netlink/settings.c diff --git a/Makefile.am b/Makefile.am index 2553cf727a36..77003f27a3a8 100644 --- a/Makefile.am +++ b/Makefile.am @@ -30,6 +30,7 @@ ethtool_SOURCES += \ netlink/msgbuff.c netlink/msgbuff.h netlink/nlsock.c \ netlink/nlsock.h netlink/strset.c netlink/strset.h \ netlink/monitor.c netlink/bitset.c netlink/bitset.h \ + netlink/settings.c \ uapi/linux/ethtool_netlink.h \ uapi/linux/netlink.h uapi/linux/genetlink.h \ uapi/linux/rtnetlink.h uapi/linux/if_link.h diff --git a/ethtool.c b/ethtool.c index c2b7cc8c0502..a69233bd73fc 100644 --- a/ethtool.c +++ b/ethtool.c @@ -5805,6 +5805,7 @@ int main(int argc, char **argp) } if ((*argp)[0] == '-') exit_bad_args(); + nlfunc = nl_gset; func = do_gset; no_dev = false; diff --git a/netlink/extapi.h b/netlink/extapi.h index 1d5b68226af4..8608ea7f51f5 100644 --- a/netlink/extapi.h +++ b/netlink/extapi.h @@ -15,6 +15,7 @@ struct nl_context; int netlink_init(struct cmd_context *ctx); void netlink_done(struct cmd_context *ctx); +int nl_gset(struct cmd_context *ctx); int nl_monitor(struct cmd_context *ctx); void nl_monitor_usage(void); @@ -34,6 +35,8 @@ static inline void nl_monitor_usage(void) { } +#define nl_gset NULL + #endif /* ETHTOOL_ENABLE_NETLINK */ #endif /* ETHTOOL_EXTAPI_H__ */ diff --git a/netlink/monitor.c b/netlink/monitor.c index 300fd5bc2e51..e8fdcd2b93ef 100644 --- a/netlink/monitor.c +++ b/netlink/monitor.c @@ -15,6 +15,14 @@ static struct { uint8_t cmd; mnl_cb_t cb; } monitor_callbacks[] = { + { + .cmd = ETHTOOL_MSG_LINKMODES_NTF, + .cb = linkmodes_reply_cb, + }, + { + .cmd = ETHTOOL_MSG_LINKINFO_NTF, + .cb = linkinfo_reply_cb, + }, }; static void clear_filter(struct nl_context *nlctx) @@ -70,6 +78,14 @@ static struct monitor_option monitor_opts[] = { .pattern = "|--all", .cmd = 0, }, + { + .pattern = "-s|--change", + .cmd = ETHTOOL_MSG_LINKINFO_NTF, + }, + { + .pattern = "-s|--change", + .cmd = ETHTOOL_MSG_LINKMODES_NTF, + }, }; static bool pattern_match(const char *s, const char *pattern) diff --git a/netlink/netlink.h b/netlink/netlink.h index be44f9c16f19..16754899976d 100644 --- a/netlink/netlink.h +++ b/netlink/netlink.h @@ -30,6 +30,7 @@ struct nl_context { bool is_monitor; uint32_t filter_cmds[CMDMASK_WORDS]; const char *filter_devname; + bool no_banner; }; struct attr_tb_info { @@ -46,6 +47,9 @@ int attr_cb(const struct nlattr *attr, void *data); const char *get_dev_name(const struct nlattr *nest); int get_dev_info(const struct nlattr *nest, int *ifindex, char *ifname); +int linkmodes_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int linkinfo_reply_cb(const struct nlmsghdr *nlhdr, void *data); + static inline void copy_devname(char *dst, const char *src) { strncpy(dst, src, ALTIFNAMSIZ); diff --git a/netlink/settings.c b/netlink/settings.c new file mode 100644 index 000000000000..46c292a3d92d --- /dev/null +++ b/netlink/settings.c @@ -0,0 +1,647 @@ +/* + * settings.c - netlink implementation of settings commands + * + * Implementation of "ethtool " and "ethtool -s ...". + */ + +#include +#include +#include + +#include "../internal.h" +#include "../common.h" +#include "netlink.h" +#include "strset.h" +#include "bitset.h" + +/* GET_SETTINGS */ + +enum link_mode_class { + LM_CLASS_UNKNOWN, + LM_CLASS_REAL, + LM_CLASS_AUTONEG, + LM_CLASS_PORT, + LM_CLASS_PAUSE, + LM_CLASS_FEC, +}; + +struct link_mode_info { + enum link_mode_class class; + u32 speed; + u8 duplex; +}; + +static const char *const names_duplex[] = { + [DUPLEX_HALF] = "Half", + [DUPLEX_FULL] = "Full", +}; + +static const char *const names_port[] = { + [PORT_TP] = "Twisted Pair", + [PORT_AUI] = "AUI", + [PORT_BNC] = "BNC", + [PORT_MII] = "MII", + [PORT_FIBRE] = "FIBRE", + [PORT_DA] = "Direct Attach Copper", + [PORT_NONE] = "None", + [PORT_OTHER] = "Other", +}; + +static const char *const names_transceiver[] = { + [XCVR_INTERNAL] = "internal", + [XCVR_EXTERNAL] = "external", +}; + +/* the practice of putting completely unrelated flags into link mode bitmaps + * is rather unfortunate but as even ethtool_link_ksettings preserved that, + * there is little chance of getting them separated any time soon so let's + * sort them out ourselves + */ +static const struct link_mode_info link_modes[] = { + [ETHTOOL_LINK_MODE_10baseT_Half_BIT] = + { LM_CLASS_REAL, 10, DUPLEX_HALF }, + [ETHTOOL_LINK_MODE_10baseT_Full_BIT] = + { LM_CLASS_REAL, 10, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_100baseT_Half_BIT] = + { LM_CLASS_REAL, 100, DUPLEX_HALF }, + [ETHTOOL_LINK_MODE_100baseT_Full_BIT] = + { LM_CLASS_REAL, 100, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_1000baseT_Half_BIT] = + { LM_CLASS_REAL, 1000, DUPLEX_HALF }, + [ETHTOOL_LINK_MODE_1000baseT_Full_BIT] = + { LM_CLASS_REAL, 1000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_Autoneg_BIT] = + { LM_CLASS_AUTONEG }, + [ETHTOOL_LINK_MODE_TP_BIT] = + { LM_CLASS_PORT }, + [ETHTOOL_LINK_MODE_AUI_BIT] = + { LM_CLASS_PORT }, + [ETHTOOL_LINK_MODE_MII_BIT] = + { LM_CLASS_PORT }, + [ETHTOOL_LINK_MODE_FIBRE_BIT] = + { LM_CLASS_PORT }, + [ETHTOOL_LINK_MODE_BNC_BIT] = + { LM_CLASS_PORT }, + [ETHTOOL_LINK_MODE_10000baseT_Full_BIT] = + { LM_CLASS_REAL, 10000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_Pause_BIT] = + { LM_CLASS_PAUSE }, + [ETHTOOL_LINK_MODE_Asym_Pause_BIT] = + { LM_CLASS_PAUSE }, + [ETHTOOL_LINK_MODE_2500baseX_Full_BIT] = + { LM_CLASS_REAL, 2500, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_Backplane_BIT] = + { LM_CLASS_PORT }, + [ETHTOOL_LINK_MODE_1000baseKX_Full_BIT] = + { LM_CLASS_REAL, 1000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT] = + { LM_CLASS_REAL, 10000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_10000baseKR_Full_BIT] = + { LM_CLASS_REAL, 10000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_10000baseR_FEC_BIT] = + { LM_CLASS_REAL, 10000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT] = + { LM_CLASS_REAL, 20000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT] = + { LM_CLASS_REAL, 20000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT] = + { LM_CLASS_REAL, 40000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT] = + { LM_CLASS_REAL, 40000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT] = + { LM_CLASS_REAL, 40000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT] = + { LM_CLASS_REAL, 40000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT] = + { LM_CLASS_REAL, 56000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT] = + { LM_CLASS_REAL, 56000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT] = + { LM_CLASS_REAL, 56000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT] = + { LM_CLASS_REAL, 56000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_25000baseCR_Full_BIT] = + { LM_CLASS_REAL, 25000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_25000baseKR_Full_BIT] = + { LM_CLASS_REAL, 25000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_25000baseSR_Full_BIT] = + { LM_CLASS_REAL, 25000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT] = + { LM_CLASS_REAL, 50000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT] = + { LM_CLASS_REAL, 50000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT] = + { LM_CLASS_REAL, 100000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT] = + { LM_CLASS_REAL, 100000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT] = + { LM_CLASS_REAL, 100000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT] = + { LM_CLASS_REAL, 100000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT] = + { LM_CLASS_REAL, 50000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_1000baseX_Full_BIT] = + { LM_CLASS_REAL, 1000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_10000baseCR_Full_BIT] = + { LM_CLASS_REAL, 10000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_10000baseSR_Full_BIT] = + { LM_CLASS_REAL, 10000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_10000baseLR_Full_BIT] = + { LM_CLASS_REAL, 10000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_10000baseLRM_Full_BIT] = + { LM_CLASS_REAL, 10000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_10000baseER_Full_BIT] = + { LM_CLASS_REAL, 10000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_2500baseT_Full_BIT] = + { LM_CLASS_REAL, 2500, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_5000baseT_Full_BIT] = + { LM_CLASS_REAL, 5000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_FEC_NONE_BIT] = + { LM_CLASS_FEC }, + [ETHTOOL_LINK_MODE_FEC_RS_BIT] = + { LM_CLASS_FEC }, + [ETHTOOL_LINK_MODE_FEC_BASER_BIT] = + { LM_CLASS_FEC }, + [ETHTOOL_LINK_MODE_50000baseKR_Full_BIT] = + { LM_CLASS_REAL, 50000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_50000baseSR_Full_BIT] = + { LM_CLASS_REAL, 50000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_50000baseCR_Full_BIT] = + { LM_CLASS_REAL, 50000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_50000baseLR_ER_FR_Full_BIT] = + { LM_CLASS_REAL, 50000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_50000baseDR_Full_BIT] = + { LM_CLASS_REAL, 50000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_100000baseKR2_Full_BIT] = + { LM_CLASS_REAL, 100000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_100000baseSR2_Full_BIT] = + { LM_CLASS_REAL, 100000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_100000baseCR2_Full_BIT] = + { LM_CLASS_REAL, 100000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_100000baseLR2_ER2_FR2_Full_BIT] = + { LM_CLASS_REAL, 100000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_100000baseDR2_Full_BIT] = + { LM_CLASS_REAL, 100000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_200000baseKR4_Full_BIT] = + { LM_CLASS_REAL, 200000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_200000baseSR4_Full_BIT] = + { LM_CLASS_REAL, 200000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_200000baseLR4_ER4_FR4_Full_BIT] = + { LM_CLASS_REAL, 200000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_200000baseDR4_Full_BIT] = + { LM_CLASS_REAL, 200000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_200000baseCR4_Full_BIT] = + { LM_CLASS_REAL, 200000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_100baseT1_Full_BIT] = + { LM_CLASS_REAL, 100, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_1000baseT1_Full_BIT] = + { LM_CLASS_REAL, 1000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_400000baseKR8_Full_BIT] = + { LM_CLASS_REAL, 400000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_400000baseSR8_Full_BIT] = + { LM_CLASS_REAL, 400000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_400000baseLR8_ER8_FR8_Full_BIT] = + { LM_CLASS_REAL, 400000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_400000baseDR8_Full_BIT] = + { LM_CLASS_REAL, 400000, DUPLEX_FULL }, + [ETHTOOL_LINK_MODE_400000baseCR8_Full_BIT] = + { LM_CLASS_REAL, 400000, DUPLEX_FULL }, +}; +const unsigned int link_modes_count = ARRAY_SIZE(link_modes); + +static bool lm_class_match(unsigned int mode, enum link_mode_class class) +{ + unsigned int mode_class = (mode < link_modes_count) ? + link_modes[mode].class : LM_CLASS_UNKNOWN; + + return mode_class == class || + (class == LM_CLASS_REAL && mode_class == LM_CLASS_UNKNOWN); +} + +static void print_enum(const char *const *info, unsigned int n_info, + unsigned int val, const char *label) +{ + if (val >= n_info || !info[val]) + printf("\t%s: Unknown! (%d)\n", label, val); + else + printf("\t%s: %s\n", label, info[val]); +} + +static int dump_pause(const struct nlattr *attr, bool mask, const char *label) +{ + bool pause, asym; + int ret = 0; + + pause = bitset_get_bit(attr, mask, ETHTOOL_LINK_MODE_Pause_BIT, &ret); + if (ret < 0) + goto err; + asym = bitset_get_bit(attr, mask, ETHTOOL_LINK_MODE_Asym_Pause_BIT, + &ret); + if (ret < 0) + goto err; + + printf("\t%s", label); + if (pause) + printf("%s\n", asym ? "Symmetric Receive-only" : "Symmetric"); + else + printf("%s\n", asym ? "Transmit-only" : "No"); + + return 0; +err: + fprintf(stderr, "malformed netlink message (pause modes)\n"); + return ret; +} + +static void print_banner(struct nl_context *nlctx) +{ + if (nlctx->no_banner) + return; + printf("Settings for %s:\n", nlctx->devname); + nlctx->no_banner = true; +} + +static int dump_link_modes(struct nl_context *nlctx, + const struct nlattr *bitset, bool mask, + unsigned int class, const char *before, + const char *between, const char *after, + const char *if_none) +{ + const struct nlattr *bitset_tb[ETHTOOL_A_BITSET_MAX + 1] = {}; + DECLARE_ATTR_TB_INFO(bitset_tb); + const unsigned int before_len = strlen(before); + const struct nlattr *bits; + const struct nlattr *bit; + bool first = true; + int prev = -2; + int ret; + + ret = mnl_attr_parse_nested(bitset, attr_cb, &bitset_tb_info); + bits = bitset_tb[ETHTOOL_A_BITSET_BITS]; + if (ret < 0) + goto err_nonl; + if (!bits) { + const struct stringset *lm_strings; + unsigned int count; + unsigned int idx; + const char *name; + + ret = netlink_init_ethnl2_socket(nlctx); + if (ret < 0) + goto err_nonl; + lm_strings = global_stringset(ETH_SS_LINK_MODES, + nlctx->ethnl2_socket); + bits = mask ? bitset_tb[ETHTOOL_A_BITSET_MASK] : + bitset_tb[ETHTOOL_A_BITSET_VALUE]; + ret = -EFAULT; + if (!bits || !bitset_tb[ETHTOOL_A_BITSET_SIZE]) + goto err_nonl; + count = mnl_attr_get_u32(bitset_tb[ETHTOOL_A_BITSET_SIZE]); + if (mnl_attr_get_payload_len(bits) / 4 < (count + 31) / 32) + goto err_nonl; + + printf("\t%s", before); + for (idx = 0; idx < count; idx++) { + const uint32_t *raw_data = mnl_attr_get_payload(bits); + char buff[10]; + + if (!(raw_data[idx / 32] & (1U << (idx % 32)))) + continue; + if (!lm_class_match(idx, class)) + continue; + name = get_string(lm_strings, idx); + if (!name) { + snprintf(buff, sizeof(buff), "BIT%u", idx); + name = buff; + } + if (first) + first = false; + /* ugly hack to preserve old output format */ + if (class == LM_CLASS_REAL && (prev == idx - 1) && + prev < link_modes_count && + link_modes[prev].class == LM_CLASS_REAL && + link_modes[prev].duplex == DUPLEX_HALF) + putchar(' '); + else if (between) + printf("\t%s", between); + else + printf("\n\t%*s", before_len, ""); + printf("%s", name); + prev = idx; + } + goto after; + } + + printf("\t%s", before); + mnl_attr_for_each_nested(bit, bits) { + const struct nlattr *tb[ETHTOOL_A_BITSET_BIT_MAX + 1] = {}; + DECLARE_ATTR_TB_INFO(tb); + unsigned int idx; + const char *name; + + if (mnl_attr_get_type(bit) != ETHTOOL_A_BITSET_BITS_BIT) + continue; + ret = mnl_attr_parse_nested(bit, attr_cb, &tb_info); + if (ret < 0) + goto err; + ret = -EFAULT; + if (!tb[ETHTOOL_A_BITSET_BIT_INDEX] || + !tb[ETHTOOL_A_BITSET_BIT_NAME]) + goto err; + if (!mask && !tb[ETHTOOL_A_BITSET_BIT_VALUE]) + continue; + + idx = mnl_attr_get_u32(tb[ETHTOOL_A_BITSET_BIT_INDEX]); + name = mnl_attr_get_str(tb[ETHTOOL_A_BITSET_BIT_NAME]); + if (!lm_class_match(idx, class)) + continue; + if (first) { + first = false; + } else { + /* ugly hack to preserve old output format */ + if ((class == LM_CLASS_REAL) && (prev == idx - 1) && + (prev < link_modes_count) && + (link_modes[prev].class == LM_CLASS_REAL) && + (link_modes[prev].duplex == DUPLEX_HALF)) + putchar(' '); + else if (between) + printf("\t%s", between); + else + printf("\n\t%*s", before_len, ""); + } + printf("%s", name); + prev = idx; + } +after: + if (first && if_none) + printf("%s", if_none); + printf(after); + + return 0; +err: + putchar('\n'); +err_nonl: + fflush(stdout); + fprintf(stderr, "malformed netlink message (link_modes)\n"); + return ret; +} + +static int dump_our_modes(struct nl_context *nlctx, const struct nlattr *attr) +{ + bool autoneg; + int ret; + + print_banner(nlctx); + ret = dump_link_modes(nlctx, attr, true, LM_CLASS_PORT, + "Supported ports: [ ", " ", " ]\n", NULL); + if (ret < 0) + return ret; + + ret = dump_link_modes(nlctx, attr, true, LM_CLASS_REAL, + "Supported link modes: ", NULL, "\n", + "Not reported"); + if (ret < 0) + return ret; + ret = dump_pause(attr, true, "Supported pause frame use: "); + if (ret < 0) + return ret; + + autoneg = bitset_get_bit(attr, true, ETHTOOL_LINK_MODE_Autoneg_BIT, + &ret); + if (ret < 0) + return ret; + printf("\tSupports auto-negotiation: %s\n", autoneg ? "Yes" : "No"); + + ret = dump_link_modes(nlctx, attr, true, LM_CLASS_FEC, + "Supported FEC modes: ", " ", "\n", + "Not reported"); + if (ret < 0) + return ret; + + ret = dump_link_modes(nlctx, attr, false, LM_CLASS_REAL, + "Advertised link modes: ", NULL, "\n", + "Not reported"); + if (ret < 0) + return ret; + + ret = dump_pause(attr, false, "Advertised pause frame use: "); + if (ret < 0) + return ret; + autoneg = bitset_get_bit(attr, false, ETHTOOL_LINK_MODE_Autoneg_BIT, + &ret); + if (ret < 0) + return ret; + printf("\tAdvertised auto-negotiation: %s\n", autoneg ? "Yes" : "No"); + + ret = dump_link_modes(nlctx, attr, true, LM_CLASS_FEC, + "Advertised FEC modes: ", " ", "\n", + "Not reported"); + return ret; +} + +static int dump_peer_modes(struct nl_context *nlctx, const struct nlattr *attr) +{ + bool autoneg; + int ret; + + print_banner(nlctx); + ret = dump_link_modes(nlctx, attr, false, LM_CLASS_REAL, + "Link partner advertised link modes: ", + NULL, "\n", "Not reported"); + if (ret < 0) + return ret; + + ret = dump_pause(attr, false, + "Link partner advertised pause frame use: "); + if (ret < 0) + return ret; + + autoneg = bitset_get_bit(attr, false, + ETHTOOL_LINK_MODE_Autoneg_BIT, &ret); + if (ret < 0) + return ret; + printf("\tLink partner advertised auto-negotiation: %s\n", + autoneg ? "Yes" : "No"); + + ret = dump_link_modes(nlctx, attr, true, LM_CLASS_FEC, + "Link partner advertised FEC modes: ", + " ", "\n", "No"); + return ret; +} + +int linkmodes_reply_cb(const struct nlmsghdr *nlhdr, void *data) +{ + const struct nlattr *tb[ETHTOOL_A_LINKMODES_MAX + 1] = {}; + DECLARE_ATTR_TB_INFO(tb); + struct nl_context *nlctx = data; + int ret; + + if (nlctx->is_dump || nlctx->is_monitor) + nlctx->no_banner = false; + ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info); + if (ret < 0) + return ret; + nlctx->devname = get_dev_name(tb[ETHTOOL_A_LINKMODES_HEADER]); + if (!dev_ok(nlctx)) + return MNL_CB_OK; + + if (tb[ETHTOOL_A_LINKMODES_OURS]) { + ret = dump_our_modes(nlctx, tb[ETHTOOL_A_LINKMODES_OURS]); + if (ret < 0) + goto err; + } + if (tb[ETHTOOL_A_LINKMODES_PEER]) { + ret = dump_peer_modes(nlctx, tb[ETHTOOL_A_LINKMODES_PEER]); + if (ret < 0) + goto err; + } + if (tb[ETHTOOL_A_LINKMODES_SPEED]) { + uint32_t val = mnl_attr_get_u32(tb[ETHTOOL_A_LINKMODES_SPEED]); + + print_banner(nlctx); + if (val == 0 || val == (uint16_t)(-1) || val == (uint32_t)(-1)) + printf("\tSpeed: Unknown!\n"); + else + printf("\tSpeed: %uMb/s\n", val); + } + if (tb[ETHTOOL_A_LINKMODES_DUPLEX]) { + uint8_t val = mnl_attr_get_u8(tb[ETHTOOL_A_LINKMODES_DUPLEX]); + + print_banner(nlctx); + print_enum(names_duplex, ARRAY_SIZE(names_duplex), val, + "Duplex"); + } + if (tb[ETHTOOL_A_LINKMODES_AUTONEG]) { + int autoneg = mnl_attr_get_u8(tb[ETHTOOL_A_LINKMODES_AUTONEG]); + + print_banner(nlctx); + printf("\tAuto-negotiation: %s\n", + (autoneg == AUTONEG_DISABLE) ? "off" : "on"); + } + + return MNL_CB_OK; +err: + if (nlctx->is_monitor || nlctx->is_dump) + return MNL_CB_OK; + fputs("No data available\n", stdout); + nlctx->exit_code = 75; + return MNL_CB_ERROR; +} + +int linkinfo_reply_cb(const struct nlmsghdr *nlhdr, void *data) +{ + const struct nlattr *tb[ETHTOOL_A_LINKINFO_MAX + 1] = {}; + DECLARE_ATTR_TB_INFO(tb); + struct nl_context *nlctx = data; + int port = -1; + int ret; + + if (nlctx->is_dump || nlctx->is_monitor) + nlctx->no_banner = false; + ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info); + if (ret < 0) + return ret; + nlctx->devname = get_dev_name(tb[ETHTOOL_A_LINKINFO_HEADER]); + if (!dev_ok(nlctx)) + return MNL_CB_OK; + + if (tb[ETHTOOL_A_LINKINFO_PORT]) { + uint8_t val = mnl_attr_get_u8(tb[ETHTOOL_A_LINKINFO_PORT]); + + print_banner(nlctx); + print_enum(names_port, ARRAY_SIZE(names_port), val, "Port"); + port = val; + } + if (tb[ETHTOOL_A_LINKINFO_PHYADDR]) { + uint8_t val = mnl_attr_get_u8(tb[ETHTOOL_A_LINKINFO_PHYADDR]); + + print_banner(nlctx); + printf("\tPHYAD: %u\n", val); + } + if (tb[ETHTOOL_A_LINKINFO_TRANSCEIVER]) { + uint8_t val; + + val = mnl_attr_get_u8(tb[ETHTOOL_A_LINKINFO_TRANSCEIVER]); + print_banner(nlctx); + print_enum(names_transceiver, ARRAY_SIZE(names_transceiver), + val, "Transceiver"); + } + if (tb[ETHTOOL_A_LINKINFO_TP_MDIX] && tb[ETHTOOL_A_LINKINFO_TP_MDIX] && + port == PORT_TP) { + uint8_t mdix = mnl_attr_get_u8(tb[ETHTOOL_A_LINKINFO_TP_MDIX]); + uint8_t mdix_ctrl = + mnl_attr_get_u8(tb[ETHTOOL_A_LINKINFO_TP_MDIX_CTRL]); + + print_banner(nlctx); + dump_mdix(mdix, mdix_ctrl); + } + + return MNL_CB_OK; +} + +int linkstate_reply_cb(const struct nlmsghdr *nlhdr, void *data) +{ + const struct nlattr *tb[ETHTOOL_A_LINKSTATE_MAX + 1] = {}; + DECLARE_ATTR_TB_INFO(tb); + struct nl_context *nlctx = data; + int ret; + + if (nlctx->is_dump || nlctx->is_monitor) + nlctx->no_banner = false; + ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info); + if (ret < 0) + return ret; + nlctx->devname = get_dev_name(tb[ETHTOOL_A_LINKSTATE_HEADER]); + if (!dev_ok(nlctx)) + return MNL_CB_OK; + + if (tb[ETHTOOL_A_LINKSTATE_LINK]) { + uint8_t val = mnl_attr_get_u8(tb[ETHTOOL_A_LINKSTATE_LINK]); + + print_banner(nlctx); + printf("\tLink detected: %s\n", val ? "yes" : "no"); + } + + return MNL_CB_OK; +} + +static int gset_request(struct nl_socket *nlsk, uint8_t msg_type, + uint16_t hdr_attr, mnl_cb_t cb) +{ + int ret; + + ret = nlsock_prep_get_request(nlsk, msg_type, hdr_attr, 0); + if (ret < 0) + return ret; + return nlsock_send_get_request(nlsk, cb); +} + +int nl_gset(struct cmd_context *ctx) +{ + struct nl_context *nlctx = ctx->nlctx; + struct nl_socket *nlsk = nlctx->ethnl_socket; + int ret; + + nlctx->suppress_nlerr = 1; + + ret = gset_request(nlsk, ETHTOOL_MSG_LINKMODES_GET, + ETHTOOL_A_LINKMODES_HEADER, linkmodes_reply_cb); + if (ret == -ENODEV) + return ret; + + ret = gset_request(nlsk, ETHTOOL_MSG_LINKINFO_GET, + ETHTOOL_A_LINKINFO_HEADER, linkinfo_reply_cb); + if (ret == -ENODEV) + return ret; + + ret = gset_request(nlsk, ETHTOOL_MSG_LINKSTATE_GET, + ETHTOOL_A_LINKSTATE_HEADER, linkstate_reply_cb); + if (ret == -ENODEV) + return ret; + + if (!nlctx->no_banner) { + printf("No data available\n"); + return 75; + } + + return 0; +}