diff options
| author | Jakub Kicinski <jakub.kicinski@netronome.com> | 2018-01-10 12:26:02 +0000 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-01-10 13:49:35 +0100 |
| commit | 44a12ecc1cab7dcf4647dfef7d94f5c559c01407 (patch) | |
| tree | f5fa8149f2de8a7826ee0ad8ef63ef3485b30d28 /drivers/net/ethernet/netronome/nfp/bpf/offload.c | |
| parent | 2314fe9ed0a1760ceab96b81e6b7181963c93254 (diff) | |
| download | linux-44a12ecc1cab7dcf4647dfef7d94f5c559c01407.tar.bz2 | |
nfp: bpf: don't depend on high order allocations for program image
The translator pre-allocates a buffer of maximal program size.
Due to HW/FW limitations the program buffer can't currently be
longer than 128Kb, so we used to kmalloc() it, and then map for
DMA directly.
Now that the late branch resolution is copying the program image
anyway, we can just kvmalloc() the buffer. While at it, after
translation reallocate the buffer to save space.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/bpf/offload.c')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/bpf/offload.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/bpf/offload.c b/drivers/net/ethernet/netronome/nfp/bpf/offload.c index 5f165e1d7648..f63560550753 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/offload.c +++ b/drivers/net/ethernet/netronome/nfp/bpf/offload.c @@ -42,6 +42,7 @@ #include <linux/jiffies.h> #include <linux/timer.h> #include <linux/list.h> +#include <linux/mm.h> #include <net/pkt_cls.h> #include <net/tc_act/tc_gact.h> @@ -135,7 +136,7 @@ int nfp_bpf_translate(struct nfp_app *app, struct nfp_net *nn, max_instr = nn_readw(nn, NFP_NET_CFG_BPF_MAX_LEN); nfp_prog->__prog_alloc_len = max_instr * sizeof(u64); - nfp_prog->prog = kmalloc(nfp_prog->__prog_alloc_len, GFP_KERNEL); + nfp_prog->prog = kvmalloc(nfp_prog->__prog_alloc_len, GFP_KERNEL); if (!nfp_prog->prog) return -ENOMEM; @@ -147,7 +148,7 @@ int nfp_bpf_destroy(struct nfp_app *app, struct nfp_net *nn, { struct nfp_prog *nfp_prog = prog->aux->offload->dev_priv; - kfree(nfp_prog->prog); + kvfree(nfp_prog->prog); nfp_prog_free(nfp_prog); return 0; |