diff options
Diffstat (limited to 'include/net/xdp_sock_drv.h')
| -rw-r--r-- | include/net/xdp_sock_drv.h | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/include/net/xdp_sock_drv.h b/include/net/xdp_sock_drv.h index e2558ac3e195..81e02de3f453 100644 --- a/include/net/xdp_sock_drv.h +++ b/include/net/xdp_sock_drv.h @@ -165,12 +165,28 @@ static inline void *xsk_buff_raw_get_data(struct xsk_buff_pool *pool, u64 addr) return xp_raw_get_data(pool, addr); } +#define XDP_TXMD_FLAGS_VALID ( \ + XDP_TXMD_FLAGS_TIMESTAMP | \ + XDP_TXMD_FLAGS_CHECKSUM | \ + 0) + +static inline bool xsk_buff_valid_tx_metadata(struct xsk_tx_metadata *meta) +{ + return !(meta->flags & ~XDP_TXMD_FLAGS_VALID); +} + static inline struct xsk_tx_metadata *xsk_buff_get_metadata(struct xsk_buff_pool *pool, u64 addr) { + struct xsk_tx_metadata *meta; + if (!pool->tx_metadata_len) return NULL; - return xp_raw_get_data(pool, addr) - pool->tx_metadata_len; + meta = xp_raw_get_data(pool, addr) - pool->tx_metadata_len; + if (unlikely(!xsk_buff_valid_tx_metadata(meta))) + return NULL; /* no way to signal the error to the user */ + + return meta; } static inline void xsk_buff_dma_sync_for_cpu(struct xdp_buff *xdp, struct xsk_buff_pool *pool) @@ -332,6 +348,11 @@ static inline void *xsk_buff_raw_get_data(struct xsk_buff_pool *pool, u64 addr) return NULL; } +static inline bool xsk_buff_valid_tx_metadata(struct xsk_tx_metadata *meta) +{ + return false; +} + static inline struct xsk_tx_metadata *xsk_buff_get_metadata(struct xsk_buff_pool *pool, u64 addr) { return NULL; |