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net/mlx4_en: Pad ethernet packets smaller than 17 bytes 

Hardware can't accept packets smaller than 17 bytes. Therefore need to
pad with zeros.

Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eugenia Emantayev 2014-03-02 10:24:59 +02:00 committed by David S. Miller
parent b97b33a3df
commit 93591aaa62
1 changed files with 7 additions and 1 deletions
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8
drivers/net/ethernet/mellanox/mlx4/en_tx.c
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@ -585,7 +585,13 @@ static void build_inline_wqe(struct mlx4_en_tx_desc *tx_desc, struct sk_buff *sk
int spc = MLX4_INLINE_ALIGN - CTRL_SIZE - sizeof *inl;
if (skb->len <= spc) {
inl->byte_count = cpu_to_be32(1 << 31 | skb->len);
if (likely(skb->len >= MIN_PKT_LEN)) {
inl->byte_count = cpu_to_be32(1 << 31 | skb->len);
} else {
inl->byte_count = cpu_to_be32(1 << 31 | MIN_PKT_LEN);
memset(((void *)(inl + 1)) + skb->len, 0,
MIN_PKT_LEN - skb->len);
}
skb_copy_from_linear_data(skb, inl + 1, skb_headlen(skb));
if (skb_shinfo(skb)->nr_frags)
memcpy(((void *)(inl + 1)) + skb_headlen(skb), fragptr,