From 4eb50ceb5c156a166c0b00ac27f0ff3a0943cdfb Mon Sep 17 00:00:00 2001 From: Thomas Falcon Date: Mon, 18 Dec 2017 12:52:40 -0600 Subject: [PATCH] ibmvnic: Include header descriptor support for ARP packets In recent tests with new adapters, it was discovered that ARP packets were not being properly processed. This patch adds support for ARP packet headers to be passed to backing adapters, if necessary. Signed-off-by: Thomas Falcon Signed-off-by: David S. Miller --- drivers/net/ethernet/ibm/ibmvnic.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index df6d91116b65..6911b7cc06c5 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -59,6 +59,7 @@ #include #include #include +#include #include #include #include @@ -1153,6 +1154,9 @@ static int build_hdr_data(u8 hdr_field, struct sk_buff *skb, hdr_len[2] = tcp_hdrlen(skb); else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP) hdr_len[2] = sizeof(struct udphdr); + } else if (skb->protocol == htons(ETH_P_ARP)) { + hdr_len[1] = arp_hdr_len(skb->dev); + hdr_len[2] = 0; } memset(hdr_data, 0, 120); @@ -1386,7 +1390,8 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) /* determine if l2/3/4 headers are sent to firmware */ if ((*hdrs >> 7) & 1 && (skb->protocol == htons(ETH_P_IP) || - skb->protocol == htons(ETH_P_IPV6))) { + skb->protocol == htons(ETH_P_IPV6) || + skb->protocol == htons(ETH_P_ARP))) { build_hdr_descs_arr(tx_buff, &num_entries, *hdrs); tx_crq.v1.n_crq_elem = num_entries; tx_buff->indir_arr[0] = tx_crq; -- 2.34.1