Patchwork [net-next-2.6,5/9] vxge: Removed the code to bounds check the mss value

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Submitter Sreenivasa Honnur
Date July 2, 2009, 7:15 a.m.
Message ID <Pine.GSO.4.10.10907020314590.13763-100000@guinness>
Download mbox | patch
Permalink /patch/29393/
State Accepted
Delegated to: David Miller
Headers show

Comments

Sreenivasa Honnur - July 2, 2009, 7:15 a.m.
- Removed the code to bounds check the mss value. The hardware does bounds checking and 
will not allow an oversized mss to lockup the transmit path.

Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
---

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Patch

diff -urpN patch_4/drivers/net/vxge/vxge-main.c patch_5/drivers/net/vxge/vxge-main.c
--- patch_4/drivers/net/vxge/vxge-main.c	2009-06-21 23:53:43.000000000 -0700
+++ patch_5/drivers/net/vxge/vxge-main.c	2009-06-22 00:52:43.000000000 -0700
@@ -817,7 +817,6 @@  vxge_xmit(struct sk_buff *skb, struct ne
 	u64 dma_pointer;
 	struct vxge_tx_priv *txdl_priv = NULL;
 	struct __vxge_hw_fifo *fifo_hw;
-	u32 max_mss = 0x0;
 	int offload_type;
 	unsigned long flags = 0;
 	int vpath_no = 0;
@@ -969,10 +968,6 @@  vxge_xmit(struct sk_buff *skb, struct ne
 
 		int mss = vxge_tcp_mss(skb);
 		if (mss) {
-			max_mss = dev->mtu + ETH_HLEN -
-				VXGE_HW_TCPIP_HEADER_MAX_SIZE;
-			if (mss > max_mss)
-				mss = max_mss;
 			vxge_debug_tx(VXGE_TRACE,
 				"%s: %s:%d mss = %d",
 				dev->name, __func__, __LINE__, mss);
diff -urpN patch_4/drivers/net/vxge/vxge-traffic.h patch_5/drivers/net/vxge/vxge-traffic.h
--- patch_4/drivers/net/vxge/vxge-traffic.h	2009-06-21 23:53:43.000000000 -0700
+++ patch_5/drivers/net/vxge/vxge-traffic.h	2009-06-22 00:53:09.000000000 -0700
@@ -35,8 +35,6 @@ 
 			VXGE_HW_HEADER_VLAN_SIZE + \
 			VXGE_HW_HEADER_SNAP_SIZE)
 
-#define VXGE_HW_TCPIP_HEADER_MAX_SIZE	(64 + 64)
-
 /* 32bit alignments */
 #define VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN		2
 #define VXGE_HW_HEADER_802_2_SNAP_ALIGN			2