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Subject[PATCH net-next 1/8] net: qualcomm: rmnet: use ip_is_fragment()
Date
In rmnet_map_ipv4_dl_csum_trailer() use ip_is_fragment() to
determine whether a socket buffer contains a packet fragment.

Signed-off-by: Alex Elder <elder@linaro.org>
---
drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
index cecf72be51029..34bd1a98a1015 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
@@ -50,8 +50,9 @@ rmnet_map_ipv4_dl_csum_trailer(struct sk_buff *skb,
__be16 addend;

ip4h = (struct iphdr *)(skb->data);
- if ((ntohs(ip4h->frag_off) & IP_MF) ||
- ((ntohs(ip4h->frag_off) & IP_OFFSET) > 0)) {
+
+ /* We don't support checksum offload on IPv4 fragments */
+ if (ip_is_fragment(ip4h)) {
priv->stats.csum_fragmented_pkt++;
return -EOPNOTSUPP;
}
--
2.27.0
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