diff options
| author | Tirthendu Sarkar <tirthendu.sarkar@intel.com> | 2023-07-19 16:23:58 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-07-19 19:56:48 +0300 |
| commit | 63a64a56bc3f77c74085047ee45356ac850da3e8 (patch) | |
| tree | 38b4a906c0eb73640bb4f8c0fcc811ed37b9d878 /net/xdp/xsk.c | |
| parent | 492e797fdab25f2d8eb1b6bb3236f4aac474f878 (diff) | |
| download | linux-63a64a56bc3f77c74085047ee45356ac850da3e8.tar.xz | |
xsk: prepare 'options' in xdp_desc for multi-buffer use
Use the 'options' field in xdp_desc as a packet continuity marker. Since
'options' field was unused till now and was expected to be set to 0, the
'eop' descriptor will have it set to 0, while the non-eop descriptors
will have to set it to 1. This ensures legacy applications continue to
work without needing any change for single-buffer packets.
Add helper functions and extend xskq_prod_reserve_desc() to use the
'options' field.
Signed-off-by: Tirthendu Sarkar <tirthendu.sarkar@intel.com>
Link: https://lore.kernel.org/r/20230719132421.584801-2-maciej.fijalkowski@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'net/xdp/xsk.c')
| -rw-r--r-- | net/xdp/xsk.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c index 31dca4ecb2c5..914a80cd55d3 100644 --- a/net/xdp/xsk.c +++ b/net/xdp/xsk.c @@ -135,14 +135,14 @@ int xsk_reg_pool_at_qid(struct net_device *dev, struct xsk_buff_pool *pool, return 0; } -static int __xsk_rcv_zc(struct xdp_sock *xs, struct xdp_buff *xdp, u32 len) +static int __xsk_rcv_zc(struct xdp_sock *xs, struct xdp_buff *xdp, u32 len, u32 flags) { struct xdp_buff_xsk *xskb = container_of(xdp, struct xdp_buff_xsk, xdp); u64 addr; int err; addr = xp_get_handle(xskb); - err = xskq_prod_reserve_desc(xs->rx, addr, len); + err = xskq_prod_reserve_desc(xs->rx, addr, len, flags); if (err) { xs->rx_queue_full++; return err; @@ -189,7 +189,7 @@ static int __xsk_rcv(struct xdp_sock *xs, struct xdp_buff *xdp) } xsk_copy_xdp(xsk_xdp, xdp, len); - err = __xsk_rcv_zc(xs, xsk_xdp, len); + err = __xsk_rcv_zc(xs, xsk_xdp, len, 0); if (err) { xsk_buff_free(xsk_xdp); return err; @@ -259,7 +259,7 @@ static int xsk_rcv(struct xdp_sock *xs, struct xdp_buff *xdp) if (xdp->rxq->mem.type == MEM_TYPE_XSK_BUFF_POOL) { len = xdp->data_end - xdp->data; - return __xsk_rcv_zc(xs, xdp, len); + return __xsk_rcv_zc(xs, xdp, len, 0); } err = __xsk_rcv(xs, xdp); |