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| author | Björn Töpel <bjorn.topel@intel.com> | 2020-05-20 21:21:02 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-05-21 17:31:27 -0700 |
| commit | 26062b185eee49142adc45f9aa187d909d02d961 (patch) | |
| tree | 1d73827201d1c000c6c0381b199c9521c04214a6 /net/xdp/xsk.c | |
| parent | 82c41671ca4f597b6ff05bd5d118161deec26e07 (diff) | |
| download | linux-26062b185eee49142adc45f9aa187d909d02d961.tar.gz linux-26062b185eee49142adc45f9aa187d909d02d961.tar.bz2 linux-26062b185eee49142adc45f9aa187d909d02d961.zip | |
xsk: Explicitly inline functions and move definitions
In order to reduce the number of function calls, the struct
xsk_buff_pool definition is moved to xsk_buff_pool.h. The functions
xp_get_dma(), xp_dma_sync_for_cpu(), xp_dma_sync_for_device(),
xp_validate_desc() and various helper functions are explicitly
inlined.
Further, move xp_get_handle() and xp_release() to xsk.c, to allow for
the compiler to perform inlining.
rfc->v1: Make sure xp_validate_desc() is inlined for Tx perf. (Maxim)
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200520192103.355233-15-bjorn.topel@gmail.com
Diffstat (limited to 'net/xdp/xsk.c')
| -rw-r--r-- | net/xdp/xsk.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c index 3f2ab732ab8b..b6c0f08bd80d 100644 --- a/net/xdp/xsk.c +++ b/net/xdp/xsk.c @@ -99,6 +99,21 @@ bool xsk_umem_uses_need_wakeup(struct xdp_umem *umem) } EXPORT_SYMBOL(xsk_umem_uses_need_wakeup); +void xp_release(struct xdp_buff_xsk *xskb) +{ + xskb->pool->free_heads[xskb->pool->free_heads_cnt++] = xskb; +} + +static u64 xp_get_handle(struct xdp_buff_xsk *xskb) +{ + u64 offset = xskb->xdp.data - xskb->xdp.data_hard_start; + + offset += xskb->pool->headroom; + if (!xskb->pool->unaligned) + return xskb->orig_addr + offset; + return xskb->orig_addr + (offset << XSK_UNALIGNED_BUF_OFFSET_SHIFT); +} + static int __xsk_rcv_zc(struct xdp_sock *xs, struct xdp_buff *xdp, u32 len) { struct xdp_buff_xsk *xskb = container_of(xdp, struct xdp_buff_xsk, xdp); |