On 2024/10/18 20:22, Maciej Fijalkowski wrote:
> On Fri, Oct 18, 2024 at 10:37:33AM +0800, Yue Haibing wrote:
>> ixgbe_run_xdp() converts customed xdp action to a negative error code
>> with the sk_buff pointer type which be checked with IS_ERR in
>> ixgbe_clean_rx_irq(). Remove this error pointer handing instead use
>> plain int return value.
>>
>> Fixes: 924708081629 ("ixgbe: add XDP support for pass and drop actions")
>> Signed-off-by: Yue Haibing <yuehaibing@xxxxxxxxxx>
>> ---
>> drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 23 ++++++++-----------
>> 1 file changed, 9 insertions(+), 14 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
>> index 8b8404d8c946..78bf97ab0524 100644
>> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
>> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
>> @@ -1908,10 +1908,6 @@ bool ixgbe_cleanup_headers(struct ixgbe_ring *rx_ring,
>> {
>> struct net_device *netdev = rx_ring->netdev;
>>
>> - /* XDP packets use error pointer so abort at this point */
>> - if (IS_ERR(skb))
>> - return true;
>> -
>> /* Verify netdev is present, and that packet does not have any
>> * errors that would be unacceptable to the netdev.
>> */
>> @@ -2219,9 +2215,9 @@ static struct sk_buff *ixgbe_build_skb(struct ixgbe_ring *rx_ring,
>> return skb;
>> }
>>
>> -static struct sk_buff *ixgbe_run_xdp(struct ixgbe_adapter *adapter,
>> - struct ixgbe_ring *rx_ring,
>> - struct xdp_buff *xdp)
>> +static int ixgbe_run_xdp(struct ixgbe_adapter *adapter,
>> + struct ixgbe_ring *rx_ring,
>> + struct xdp_buff *xdp)
>
> please align args. checkpatch didn't yell at you?
These have aligned in my patch and checkpatch passed.
yuehaibing@localhost:~/code/net$ ./scripts/checkpatch.pl 0003-ixgbe-Fix-passing-0-to-ERR_PTR-in-ixgbe_run_xdp.patch
total: 0 errors, 0 warnings, 0 checks, 67 lines checked
0003-ixgbe-Fix-passing-0-to-ERR_PTR-in-ixgbe_run_xdp.patch has no obvious style problems and is ready for submission.
>
>> {
>> int err, result = IXGBE_XDP_PASS;
>> struct bpf_prog *xdp_prog;
>> @@ -2271,7 +2267,7 @@ static struct sk_buff *ixgbe_run_xdp(struct ixgbe_adapter *adapter,
>> break;
>> }
>> xdp_out:
>> - return ERR_PTR(-result);
>> + return result;
>> }
>>
>> static unsigned int ixgbe_rx_frame_truesize(struct ixgbe_ring *rx_ring,
>> @@ -2329,6 +2325,7 @@ static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
>> unsigned int offset = rx_ring->rx_offset;
>> unsigned int xdp_xmit = 0;
>> struct xdp_buff xdp;
>> + int xdp_res;
>>
>> /* Frame size depend on rx_ring setup when PAGE_SIZE=4K */
>> #if (PAGE_SIZE < 8192)
>> @@ -2374,12 +2371,10 @@ static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
>> /* At larger PAGE_SIZE, frame_sz depend on len size */
>> xdp.frame_sz = ixgbe_rx_frame_truesize(rx_ring, size);
>> #endif
>> - skb = ixgbe_run_xdp(adapter, rx_ring, &xdp);
>> + xdp_res = ixgbe_run_xdp(adapter, rx_ring, &xdp);
>> }
>>
>> - if (IS_ERR(skb)) {
>> - unsigned int xdp_res = -PTR_ERR(skb);
>> -
>> + if (xdp_res) {
>> if (xdp_res & (IXGBE_XDP_TX | IXGBE_XDP_REDIR)) {
>> xdp_xmit |= xdp_res;
>> ixgbe_rx_buffer_flip(rx_ring, rx_buffer, size);
>> @@ -2399,7 +2394,7 @@ static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
>> }
>>
>> /* exit if we failed to retrieve a buffer */
>> - if (!skb) {
>> + if (!xdp_res && !skb) {
>> rx_ring->rx_stats.alloc_rx_buff_failed++;
>> rx_buffer->pagecnt_bias++;
>> break;
>> @@ -2413,7 +2408,7 @@ static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
>> continue;
>>
>> /* verify the packet layout is correct */
>> - if (ixgbe_cleanup_headers(rx_ring, rx_desc, skb))
>> + if (xdp_res || ixgbe_cleanup_headers(rx_ring, rx_desc, skb))
>> continue;
>>
>> /* probably a little skewed due to removing CRC */
>> --
>> 2.34.1
>>
>
>
> .
