From: Thomas Falcon <tlfalcon@xxxxxxxxxxxxxxxxxx>
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: Sasha Levin <alexander.levin@xxxxxxxxxxx>
---
drivers/net/ethernet/ibm/ibmveth.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c
index a36022b..03dca73 100644
--- a/drivers/net/ethernet/ibm/ibmveth.c
+++ b/drivers/net/ethernet/ibm/ibmveth.c
@@ -1181,7 +1181,9 @@ static netdev_tx_t ibmveth_start_xmit(struct sk_buff *skb,
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)) {
@@ -1208,14 +1210,20 @@ static void ibmveth_rx_mss_helper(struct sk_buff *skb, u16 mss, int lrg_pkt)
/* 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)
--
2.9.3