nfp: add helper to get flower cmsg length

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

Signed-off-by: John Hurley <[email protected]>
Signed-off-by: Simon Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

diff --git a/drivers/net/ethernet/netronome/nfp/flower/cmsg.h b/drivers/net/ethernet/netronome/nfp/flower/cmsg.h
index a2ec603442365b7f3f1f58fca6940a2074bc1d0f..7a5ccf0cc7c21b37cb5ee22aac078461d68b4089 100644 (file)
--- a/drivers/net/ethernet/netronome/nfp/flower/cmsg.h
+++ b/drivers/net/ethernet/netronome/nfp/flower/cmsg.h
@@ -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

diff --git a/drivers/net/ethernet/netronome/nfp/flower/metadata.c b/drivers/net/ethernet/netronome/nfp/flower/metadata.c
index 3226ddc55f99bedbbe013100e708d58c42c6d19c..193520ef23f05af42098fd99ed0e18d9c687804f 100644 (file)
--- a/drivers/net/ethernet/netronome/nfp/flower/metadata.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/metadata.c
@@ -140,7 +140,7 @@ exit_rcu_unlock:
 
 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;