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nfp: add helper to get flower cmsg length

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Add a helper function that returns the length of the cmsg data when given
the cmsg skb

Signed-off-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Hurley 2017-09-25 12:23:35 +02:00 committed by David S. Miller
parent 14a0d032f4
commit 79ede4ae2d
2 changed files with 6 additions and 1 deletions
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5
drivers/net/ethernet/netronome/nfp/flower/cmsg.h
View File

@ -323,6 +323,11 @@ static inline void *nfp_flower_cmsg_get_data(struct sk_buff *skb)
return (unsigned char *)skb->data + NFP_FLOWER_CMSG_HLEN;
}
static inline int nfp_flower_cmsg_get_data_len(struct sk_buff *skb)
{
return skb->len - NFP_FLOWER_CMSG_HLEN;
}
struct sk_buff *
nfp_flower_cmsg_mac_repr_start(struct nfp_app *app, unsigned int num_ports);
void

2
drivers/net/ethernet/netronome/nfp/flower/metadata.c
View File

@ -140,7 +140,7 @@ nfp_flower_update_stats(struct nfp_app *app, struct nfp_fl_stats_frame *stats)
void nfp_flower_rx_flow_stats(struct nfp_app *app, struct sk_buff *skb)
{
unsigned int msg_len = skb->len - NFP_FLOWER_CMSG_HLEN;
unsigned int msg_len = nfp_flower_cmsg_get_data_len(skb);
struct nfp_fl_stats_frame *stats_frame;
unsigned char *msg;
int i;