diff options
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/bpf/main.h')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/bpf/main.h | 96 |
1 files changed, 94 insertions, 2 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/bpf/main.h b/drivers/net/ethernet/netronome/nfp/bpf/main.h index 66381afee2a9..c476bca15ba4 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/main.h +++ b/drivers/net/ethernet/netronome/nfp/bpf/main.h @@ -37,10 +37,14 @@ #include <linux/bitfield.h> #include <linux/bpf.h> #include <linux/bpf_verifier.h> +#include <linux/kernel.h> #include <linux/list.h> +#include <linux/skbuff.h> #include <linux/types.h> +#include <linux/wait.h> #include "../nfp_asm.h" +#include "fw.h" /* For relocation logic use up-most byte of branch instruction as scratch * area. Remember to clear this before sending instructions to HW! @@ -56,6 +60,9 @@ enum nfp_relo_type { RELO_BR_GO_ABORT, /* external jumps to fixed addresses */ RELO_BR_NEXT_PKT, + RELO_BR_HELPER, + /* immediate relocation against load address */ + RELO_IMMED_REL, }; /* To make absolute relocated branches (branches other than RELO_BR_REL) @@ -93,16 +100,49 @@ enum pkt_vec { * struct nfp_app_bpf - bpf app priv structure * @app: backpointer to the app * + * @tag_allocator: bitmap of control message tags in use + * @tag_alloc_next: next tag bit to allocate + * @tag_alloc_last: next tag bit to be freed + * + * @cmsg_replies: received cmsg replies waiting to be consumed + * @cmsg_wq: work queue for waiting for cmsg replies + * + * @map_list: list of offloaded maps + * @maps_in_use: number of currently offloaded maps + * @map_elems_in_use: number of elements allocated to offloaded maps + * * @adjust_head: adjust head capability * @flags: extra flags for adjust head * @off_min: minimal packet offset within buffer required * @off_max: maximum packet offset within buffer required * @guaranteed_sub: amount of negative adjustment guaranteed possible * @guaranteed_add: amount of positive adjustment guaranteed possible + * + * @maps: map capability + * @types: supported map types + * @max_maps: max number of maps supported + * @max_elems: max number of entries in each map + * @max_key_sz: max size of map key + * @max_val_sz: max size of map value + * @max_elem_sz: max size of map entry (key + value) + * + * @helpers: helper addressess for various calls + * @map_lookup: map lookup helper address */ struct nfp_app_bpf { struct nfp_app *app; + DECLARE_BITMAP(tag_allocator, U16_MAX + 1); + u16 tag_alloc_next; + u16 tag_alloc_last; + + struct sk_buff_head cmsg_replies; + struct wait_queue_head cmsg_wq; + + struct list_head map_list; + unsigned int maps_in_use; + unsigned int map_elems_in_use; + struct nfp_bpf_cap_adjust_head { u32 flags; int off_min; @@ -110,6 +150,33 @@ struct nfp_app_bpf { int guaranteed_sub; int guaranteed_add; } adjust_head; + + struct { + u32 types; + u32 max_maps; + u32 max_elems; + u32 max_key_sz; + u32 max_val_sz; + u32 max_elem_sz; + } maps; + + struct { + u32 map_lookup; + } helpers; +}; + +/** + * struct nfp_bpf_map - private per-map data attached to BPF maps for offload + * @offmap: pointer to the offloaded BPF map + * @bpf: back pointer to bpf app private structure + * @tid: table id identifying map on datapath + * @l: link on the nfp_app_bpf->map_list list + */ +struct nfp_bpf_map { + struct bpf_offloaded_map *offmap; + struct nfp_app_bpf *bpf; + u32 tid; + struct list_head l; }; struct nfp_prog; @@ -131,9 +198,12 @@ typedef int (*instr_cb_t)(struct nfp_prog *, struct nfp_insn_meta *); * @ptr: pointer type for memory operations * @ldst_gather_len: memcpy length gathered from load/store sequence * @paired_st: the paired store insn at the head of the sequence - * @arg2: arg2 for call instructions * @ptr_not_const: pointer is not always constant * @jmp_dst: destination info for jump instructions + * @func_id: function id for call instructions + * @arg1: arg1 for call instructions + * @arg2: arg2 for call instructions + * @arg2_var_off: arg2 changes stack offset on different paths * @off: index of first generated machine instruction (in nfp_prog.prog) * @n: eBPF instruction number * @flags: eBPF instruction extra optimization flags @@ -151,7 +221,12 @@ struct nfp_insn_meta { bool ptr_not_const; }; struct nfp_insn_meta *jmp_dst; - struct bpf_reg_state arg2; + struct { + u32 func_id; + struct bpf_reg_state arg1; + struct bpf_reg_state arg2; + bool arg2_var_off; + }; }; unsigned int off; unsigned short n; @@ -249,6 +324,7 @@ struct nfp_bpf_vnic { void nfp_bpf_jit_prepare(struct nfp_prog *nfp_prog, unsigned int cnt); int nfp_bpf_jit(struct nfp_prog *prog); +bool nfp_bpf_supported_opcode(u8 code); extern const struct bpf_prog_offload_ops nfp_bpf_analyzer_ops; @@ -266,4 +342,20 @@ nfp_bpf_goto_meta(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, unsigned int insn_idx, unsigned int n_insns); void *nfp_bpf_relo_for_vnic(struct nfp_prog *nfp_prog, struct nfp_bpf_vnic *bv); + +long long int +nfp_bpf_ctrl_alloc_map(struct nfp_app_bpf *bpf, struct bpf_map *map); +void +nfp_bpf_ctrl_free_map(struct nfp_app_bpf *bpf, struct nfp_bpf_map *nfp_map); +int nfp_bpf_ctrl_getfirst_entry(struct bpf_offloaded_map *offmap, + void *next_key); +int nfp_bpf_ctrl_update_entry(struct bpf_offloaded_map *offmap, + void *key, void *value, u64 flags); +int nfp_bpf_ctrl_del_entry(struct bpf_offloaded_map *offmap, void *key); +int nfp_bpf_ctrl_lookup_entry(struct bpf_offloaded_map *offmap, + void *key, void *value); +int nfp_bpf_ctrl_getnext_entry(struct bpf_offloaded_map *offmap, + void *key, void *next_key); + +void nfp_bpf_ctrl_msg_rx(struct nfp_app *app, struct sk_buff *skb); #endif |