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| author | Björn Töpel <bjorn.topel@intel.com> | 2020-05-20 21:21:00 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-05-21 17:31:27 -0700 |
| commit | 0807892ecb35734b7ce6f7c29b078f1b60151c94 (patch) | |
| tree | 6cea7b5ea63776286d6d7efb3534c12d1f588dd8 /net/xdp/xdp_umem.c | |
| parent | 39d6443c8daf9fefcfcf89de7ae87240956a0b84 (diff) | |
| download | linux-stable-0807892ecb35734b7ce6f7c29b078f1b60151c94.tar.gz linux-stable-0807892ecb35734b7ce6f7c29b078f1b60151c94.tar.bz2 linux-stable-0807892ecb35734b7ce6f7c29b078f1b60151c94.zip | |
xsk: Remove MEM_TYPE_ZERO_COPY and corresponding code
There are no users of MEM_TYPE_ZERO_COPY. Remove all corresponding
code, including the "handle" member of struct xdp_buff.
rfc->v1: Fixed spelling in commit message. (Björn)
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200520192103.355233-13-bjorn.topel@gmail.com
Diffstat (limited to 'net/xdp/xdp_umem.c')
| -rw-r--r-- | net/xdp/xdp_umem.c | 56 |
1 files changed, 1 insertions, 55 deletions
diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c index 7f04688045d5..19e59d1a5e9f 100644 --- a/net/xdp/xdp_umem.c +++ b/net/xdp/xdp_umem.c @@ -179,37 +179,6 @@ void xdp_umem_clear_dev(struct xdp_umem *umem) umem->zc = false; } -static void xdp_umem_unmap_pages(struct xdp_umem *umem) -{ - unsigned int i; - - for (i = 0; i < umem->npgs; i++) - if (PageHighMem(umem->pgs[i])) - vunmap(umem->pages[i].addr); -} - -static int xdp_umem_map_pages(struct xdp_umem *umem) -{ - unsigned int i; - void *addr; - - for (i = 0; i < umem->npgs; i++) { - if (PageHighMem(umem->pgs[i])) - addr = vmap(&umem->pgs[i], 1, VM_MAP, PAGE_KERNEL); - else - addr = page_address(umem->pgs[i]); - - if (!addr) { - xdp_umem_unmap_pages(umem); - return -ENOMEM; - } - - umem->pages[i].addr = addr; - } - - return 0; -} - static void xdp_umem_unpin_pages(struct xdp_umem *umem) { unpin_user_pages_dirty_lock(umem->pgs, umem->npgs, true); @@ -244,14 +213,9 @@ static void xdp_umem_release(struct xdp_umem *umem) umem->cq = NULL; } - xsk_reuseq_destroy(umem); xp_destroy(umem->pool); - xdp_umem_unmap_pages(umem); xdp_umem_unpin_pages(umem); - kvfree(umem->pages); - umem->pages = NULL; - xdp_umem_unaccount_pages(umem); kfree(umem); } @@ -385,11 +349,8 @@ static int xdp_umem_reg(struct xdp_umem *umem, struct xdp_umem_reg *mr) if (headroom >= chunk_size - XDP_PACKET_HEADROOM) return -EINVAL; - umem->chunk_mask = unaligned_chunks ? XSK_UNALIGNED_BUF_ADDR_MASK - : ~((u64)chunk_size - 1); umem->size = size; umem->headroom = headroom; - umem->chunk_size_nohr = chunk_size - headroom; umem->chunk_size = chunk_size; umem->npgs = size / PAGE_SIZE; umem->pgs = NULL; @@ -408,29 +369,14 @@ static int xdp_umem_reg(struct xdp_umem *umem, struct xdp_umem_reg *mr) if (err) goto out_account; - umem->pages = kvcalloc(umem->npgs, sizeof(*umem->pages), - GFP_KERNEL_ACCOUNT); - if (!umem->pages) { - err = -ENOMEM; - goto out_pin; - } - - err = xdp_umem_map_pages(umem); - if (err) - goto out_pages; - umem->pool = xp_create(umem->pgs, umem->npgs, chunks, chunk_size, headroom, size, unaligned_chunks); if (!umem->pool) { err = -ENOMEM; - goto out_unmap; + goto out_pin; } return 0; -out_unmap: - xdp_umem_unmap_pages(umem); -out_pages: - kvfree(umem->pages); out_pin: xdp_umem_unpin_pages(umem); out_account: |