diff options
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/bpf/main.c | 75 | ||||
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/bpf/main.h | 11 | ||||
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/bpf/offload.c | 2 |
3 files changed, 88 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/bpf/main.c b/drivers/net/ethernet/netronome/nfp/bpf/main.c index 54bfd7846f6d..f76bb40c20bc 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/main.c +++ b/drivers/net/ethernet/netronome/nfp/bpf/main.c @@ -34,6 +34,7 @@ #include <net/pkt_cls.h> #include "../nfpcore/nfp_cpp.h" +#include "../nfpcore/nfp_nffw.h" #include "../nfp_app.h" #include "../nfp_main.h" #include "../nfp_net.h" @@ -155,10 +156,84 @@ static bool nfp_bpf_tc_busy(struct nfp_app *app, struct nfp_net *nn) return nn->dp.ctrl & NFP_NET_CFG_CTRL_BPF; } +static int nfp_bpf_parse_capabilities(struct nfp_app *app) +{ + struct nfp_cpp *cpp = app->pf->cpp; + struct nfp_cpp_area *area; + u8 __iomem *mem, *start; + + mem = nfp_rtsym_map(app->pf->rtbl, "_abi_bpf_capabilities", "bpf.cap", + 8, &area); + if (IS_ERR(mem)) + return PTR_ERR(mem) == -ENOENT ? 0 : PTR_ERR(mem); + + start = mem; + while (mem - start + 8 < nfp_cpp_area_size(area)) { + u32 type, length; + + type = readl(mem); + length = readl(mem + 4); + + mem += 8 + length; + if (mem - start > nfp_cpp_area_size(area)) + goto err_release_free; + + switch (type) { + default: + nfp_dbg(cpp, "unknown BPF capability: %d\n", type); + break; + } + } + if (mem - start != nfp_cpp_area_size(area)) { + nfp_err(cpp, "BPF capabilities left after parsing, parsed:%lu total length:%lu\n", + mem - start, nfp_cpp_area_size(area)); + goto err_release_free; + } + + nfp_cpp_area_release_free(area); + + return 0; + +err_release_free: + nfp_err(cpp, "invalid BPF capabilities at offset:%ld\n", mem - start); + nfp_cpp_area_release_free(area); + return -EINVAL; +} + +static int nfp_bpf_init(struct nfp_app *app) +{ + struct nfp_app_bpf *bpf; + int err; + + bpf = kzalloc(sizeof(*bpf), GFP_KERNEL); + if (!bpf) + return -ENOMEM; + bpf->app = app; + app->priv = bpf; + + err = nfp_bpf_parse_capabilities(app); + if (err) + goto err_free_bpf; + + return 0; + +err_free_bpf: + kfree(bpf); + return err; +} + +static void nfp_bpf_clean(struct nfp_app *app) +{ + kfree(app->priv); +} + const struct nfp_app_type app_bpf = { .id = NFP_APP_BPF_NIC, .name = "ebpf", + .init = nfp_bpf_init, + .clean = nfp_bpf_clean, + .extra_cap = nfp_bpf_extra_cap, .vnic_alloc = nfp_app_nic_vnic_alloc, diff --git a/drivers/net/ethernet/netronome/nfp/bpf/main.h b/drivers/net/ethernet/netronome/nfp/bpf/main.h index 5884291ddba5..a1a3f96353df 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/main.h +++ b/drivers/net/ethernet/netronome/nfp/bpf/main.h @@ -78,6 +78,14 @@ enum pkt_vec { #define NFP_BPF_ABI_FLAGS reg_imm(0) #define NFP_BPF_ABI_FLAG_MARK 1 +/** + * struct nfp_app_bpf - bpf app priv structure + * @app: backpointer to the app + */ +struct nfp_app_bpf { + struct nfp_app *app; +}; + struct nfp_prog; struct nfp_insn_meta; typedef int (*instr_cb_t)(struct nfp_prog *, struct nfp_insn_meta *); @@ -160,6 +168,7 @@ static inline bool is_mbpf_store(const struct nfp_insn_meta *meta) /** * struct nfp_prog - nfp BPF program + * @bpf: backpointer to the bpf app priv structure * @prog: machine code * @prog_len: number of valid instructions in @prog array * @__prog_alloc_len: alloc size of @prog array @@ -176,6 +185,8 @@ static inline bool is_mbpf_store(const struct nfp_insn_meta *meta) * @insns: list of BPF instruction wrappers (struct nfp_insn_meta) */ struct nfp_prog { + struct nfp_app_bpf *bpf; + u64 *prog; unsigned int prog_len; unsigned int __prog_alloc_len; diff --git a/drivers/net/ethernet/netronome/nfp/bpf/offload.c b/drivers/net/ethernet/netronome/nfp/bpf/offload.c index 377976ce92dd..fa2905e67b07 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/offload.c +++ b/drivers/net/ethernet/netronome/nfp/bpf/offload.c @@ -48,6 +48,7 @@ #include <net/tc_act/tc_mirred.h> #include "main.h" +#include "../nfp_app.h" #include "../nfp_net_ctrl.h" #include "../nfp_net.h" @@ -115,6 +116,7 @@ int nfp_bpf_verifier_prep(struct nfp_app *app, struct nfp_net *nn, INIT_LIST_HEAD(&nfp_prog->insns); nfp_prog->type = prog->type; + nfp_prog->bpf = app->priv; ret = nfp_prog_prepare(nfp_prog, prog->insnsi, prog->len); if (ret) |