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GET /api/patches/818037/?format=api
{ "id": 818037, "url": "http://patchwork.ozlabs.org/api/patches/818037/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netdev/patch/20170925032941.14586-9-tom@quantonium.net/", "project": { "id": 7, "url": "http://patchwork.ozlabs.org/api/projects/7/?format=api", "name": "Linux network development", "link_name": "netdev", "list_id": "netdev.vger.kernel.org", "list_email": "netdev@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170925032941.14586-9-tom@quantonium.net>", "list_archive_url": null, "date": "2017-09-25T03:29:37", "name": "[v3,net-next,08/12] gtp: Call function to update path mtu", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": true, "hash": "96c326e18c6ce0bcc4d1bc7a1386b563cdce6d8c", "submitter": { "id": 72064, "url": "http://patchwork.ozlabs.org/api/people/72064/?format=api", "name": "Tom Herbert", "email": "tom@quantonium.net" }, "delegate": { "id": 34, "url": "http://patchwork.ozlabs.org/api/users/34/?format=api", "username": "davem", "first_name": "David", "last_name": "Miller", "email": "davem@davemloft.net" }, "mbox": "http://patchwork.ozlabs.org/project/netdev/patch/20170925032941.14586-9-tom@quantonium.net/mbox/", "series": [ { "id": 4865, "url": "http://patchwork.ozlabs.org/api/series/4865/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netdev/list/?series=4865", "date": "2017-09-25T03:29:29", "name": "gtp: Additional feature support - Part I", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/4865/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/818037/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/818037/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<netdev-owner@vger.kernel.org>", "X-Original-To": "patchwork-incoming@ozlabs.org", "Delivered-To": "patchwork-incoming@ozlabs.org", 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aschultz@tpip.net,\n\tnetdev@vger.kernel.org, rohit@quantonium.net,\n\tTom Herbert <tom@quantonium.net>", "Subject": "[PATCH v3 net-next 08/12] gtp: Call function to update path mtu", "Date": "Sun, 24 Sep 2017 20:29:37 -0700", "Message-Id": "<20170925032941.14586-9-tom@quantonium.net>", "X-Mailer": "git-send-email 2.11.0", "In-Reply-To": "<20170925032941.14586-1-tom@quantonium.net>", "References": "<20170925032941.14586-1-tom@quantonium.net>", "Sender": "netdev-owner@vger.kernel.org", "Precedence": "bulk", "List-ID": "<netdev.vger.kernel.org>", "X-Mailing-List": "netdev@vger.kernel.org" }, "content": "Replace mtu handling with call to __iptunnel_update_pmtu.\n\nSigned-off-by: Tom Herbert <tom@quantonium.net>\n---\n drivers/net/gtp.c | 36 ++++++------------------------------\n 1 file changed, 6 insertions(+), 30 deletions(-)", "diff": "diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c\nindex a6e2e0a1f424..bbb08f8849d3 100644\n--- a/drivers/net/gtp.c\n+++ b/drivers/net/gtp.c\n@@ -53,6 +53,7 @@ struct pdp_ctx {\n \t\t} v1;\n \t} u;\n \tu8\t\t\tgtp_version;\n+\tu8\t\t\thlen;\n \tu16\t\t\taf;\n \n \tstruct in_addr\t\tms_addr_ip4;\n@@ -467,8 +468,6 @@ static int gtp_build_skb_ip4(struct sk_buff *skb, struct net_device *dev,\n \tstruct iphdr *iph;\n \tstruct sock *sk;\n \t__be32 saddr;\n-\t__be16 df;\n-\tint mtu;\n \n \t/* Read the IP destination address and resolve the PDP context.\n \t * Prepend PDP header with TEI/TID from PDP ctx.\n@@ -514,37 +513,12 @@ static int gtp_build_skb_ip4(struct sk_buff *skb, struct net_device *dev,\n \n \tskb_dst_drop(skb);\n \n-\t/* This is similar to tnl_update_pmtu(). */\n-\tdf = iph->frag_off;\n-\tif (df) {\n-\t\tmtu = dst_mtu(&rt->dst) - dev->hard_header_len -\n-\t\t\tsizeof(struct iphdr) - sizeof(struct udphdr);\n-\t\tswitch (pctx->gtp_version) {\n-\t\tcase GTP_V0:\n-\t\t\tmtu -= sizeof(struct gtp0_header);\n-\t\t\tbreak;\n-\t\tcase GTP_V1:\n-\t\t\tmtu -= sizeof(struct gtp1_header);\n-\t\t\tbreak;\n-\t\t}\n-\t} else {\n-\t\tmtu = dst_mtu(&rt->dst);\n-\t}\n-\n-\trt->dst.ops->update_pmtu(&rt->dst, NULL, skb, mtu);\n-\n-\tif (!skb_is_gso(skb) && (iph->frag_off & htons(IP_DF)) &&\n-\t mtu < ntohs(iph->tot_len)) {\n-\t\tnetdev_dbg(dev, \"packet too big, fragmentation needed\\n\");\n-\t\tmemset(IPCB(skb), 0, sizeof(*IPCB(skb)));\n-\t\ticmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED,\n-\t\t\t htonl(mtu));\n-\t\tgoto err_rt;\n-\t}\n-\n \tgtp_set_pktinfo_ipv4(pktinfo, sk, iph, pctx, rt, &fl4, dev);\n \tgtp_push_header(skb, pktinfo);\n \n+\t__iptunnel_update_pmtu(dev, skb, &rt->dst, !!iph->frag_off, iph,\n+\t\t\t pctx->hlen, pctx->peer_addr_ip4.s_addr);\n+\n \treturn 0;\n err_rt:\n \tip_rt_put(rt);\n@@ -915,10 +889,12 @@ static void ipv4_pdp_fill(struct pdp_ctx *pctx, struct genl_info *info)\n \t\t */\n \t\tpctx->u.v0.tid = nla_get_u64(info->attrs[GTPA_TID]);\n \t\tpctx->u.v0.flow = nla_get_u16(info->attrs[GTPA_FLOW]);\n+\t\tpctx->hlen = sizeof(struct udphdr) + sizeof(struct gtp0_header);\n \t\tbreak;\n \tcase GTP_V1:\n \t\tpctx->u.v1.i_tei = nla_get_u32(info->attrs[GTPA_I_TEI]);\n \t\tpctx->u.v1.o_tei = nla_get_u32(info->attrs[GTPA_O_TEI]);\n+\t\tpctx->hlen = sizeof(struct udphdr) + sizeof(struct gtp1_header);\n \t\tbreak;\n \tdefault:\n \t\tbreak;\n", "prefixes": [ "v3", "net-next", "08/12" ] }