An earlier patch removed setting of tot_len in IPV4 headers because it
was also set in ip_local_out. However, this change resulted in an incorrect
ICRC being computed because the tot_len field is not masked out. This
patch restores that line. This fixes the bug reported by Zhu Yanjun.
This bug would have also affected anyone using rxe.
Fixes: 230bb836ee88 ("RDMA/rxe: Fix redundant call to ip_send_check")
Reported_by: Zhu Yanjun <zyjzyj2000@xxxxxxxxx>
Signed-off-by: Bob Pearson <rpearsonhpe@xxxxxxxxx>
---
drivers/infiniband/sw/rxe/rxe_net.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c
index dec92928a1cd..5ac27f28ace1 100644
--- a/drivers/infiniband/sw/rxe/rxe_net.c
+++ b/drivers/infiniband/sw/rxe/rxe_net.c
@@ -259,6 +259,7 @@ static void prepare_ipv4_hdr(struct dst_entry *dst, struct sk_buff *skb,
iph->version = IPVERSION;
iph->ihl = sizeof(struct iphdr) >> 2;
+ iph->tot_len = htons(skb->len);
iph->frag_off = df;
iph->protocol = proto;
iph->tos = tos;
--
2.30.2
