This is a note to let you know that I've just added the patch titled
ibmveth: calculate gso_segs for large packets
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ibmveth-calculate-gso_segs-for-large-packets.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 94acf164dc8f1184e8d0737be7125134c2701dbe Mon Sep 17 00:00:00 2001
From: Thomas Falcon <tlfalcon@xxxxxxxxxxxxxxxxxx>
Date: Tue, 13 Dec 2016 18:15:09 -0600
Subject: ibmveth: calculate gso_segs for large packets
From: Thomas Falcon <tlfalcon@xxxxxxxxxxxxxxxxxx>
commit 94acf164dc8f1184e8d0737be7125134c2701dbe upstream.
Include calculations to compute the number of segments
that comprise an aggregated large packet.
Signed-off-by: Thomas Falcon <tlfalcon@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@xxxxxxxxx>
Reviewed-by: Jonathan Maxwell <jmaxwell37@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/ibm/ibmveth.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/ibm/ibmveth.c
+++ b/drivers/net/ethernet/ibm/ibmveth.c
@@ -1179,7 +1179,9 @@ map_failed:
static void ibmveth_rx_mss_helper(struct sk_buff *skb, u16 mss, int lrg_pkt)
{
+ struct tcphdr *tcph;
int offset = 0;
+ int hdr_len;
/* only TCP packets will be aggregated */
if (skb->protocol == htons(ETH_P_IP)) {
@@ -1206,14 +1208,20 @@ static void ibmveth_rx_mss_helper(struct
/* if mss is not set through Large Packet bit/mss in rx buffer,
* expect that the mss will be written to the tcp header checksum.
*/
+ tcph = (struct tcphdr *)(skb->data + offset);
if (lrg_pkt) {
skb_shinfo(skb)->gso_size = mss;
} else if (offset) {
- struct tcphdr *tcph = (struct tcphdr *)(skb->data + offset);
-
skb_shinfo(skb)->gso_size = ntohs(tcph->check);
tcph->check = 0;
}
+
+ if (skb_shinfo(skb)->gso_size) {
+ hdr_len = offset + tcph->doff * 4;
+ skb_shinfo(skb)->gso_segs =
+ DIV_ROUND_UP(skb->len - hdr_len,
+ skb_shinfo(skb)->gso_size);
+ }
}
static int ibmveth_poll(struct napi_struct *napi, int budget)
Patches currently in stable-queue which might be from tlfalcon@xxxxxxxxxxxxxxxxxx are
queue-4.4/ibmveth-calculate-gso_segs-for-large-packets.patch