29 int _getsockopt(struct bpf_sockopt *ctx)  in _getsockopt()  argument
31 	__u8 *optval_end = ctx->optval_end;  in _getsockopt()
32 	__u8 *optval = ctx->optval;  in _getsockopt()
35 	if (ctx->level == SOL_IP && ctx->optname == IP_TOS) {  in _getsockopt()
40 		ctx->optlen = 0; /* bypass optval>PAGE_SIZE */  in _getsockopt()
44 	if (ctx->level == SOL_SOCKET && ctx->optname == SO_SNDBUF) {  in _getsockopt()
52 	if (ctx->level == SOL_TCP && ctx->optname == TCP_CONGESTION) {  in _getsockopt()
60 	if (ctx->level == SOL_IP && ctx->optname == IP_FREEBIND) {  in _getsockopt()
64 		ctx->retval = 0; /* Reset system call return value to zero */  in _getsockopt()
68 		ctx->optlen = 1;  in _getsockopt()
80 	if (ctx->level != SOL_CUSTOM)  in _getsockopt()
86 	storage = bpf_sk_storage_get(&socket_storage_map, ctx->sk, 0,  in _getsockopt()
91 	if (!ctx->retval)  in _getsockopt()
95 	ctx->retval = 0; /* Reset system call return value to zero */  in _getsockopt()
98 	ctx->optlen = 1;  in _getsockopt()
104 int _setsockopt(struct bpf_sockopt *ctx)  in _setsockopt()  argument
106 	__u8 *optval_end = ctx->optval_end;  in _setsockopt()
107 	__u8 *optval = ctx->optval;  in _setsockopt()
110 	if (ctx->level == SOL_IP && ctx->optname == IP_TOS) {  in _setsockopt()
115 		ctx->optlen = 0; /* bypass optval>PAGE_SIZE */  in _setsockopt()
119 	if (ctx->level == SOL_SOCKET && ctx->optname == SO_SNDBUF) {  in _setsockopt()
126 		ctx->optlen = 4;  in _setsockopt()
131 	if (ctx->level == SOL_TCP && ctx->optname == TCP_CONGESTION) {  in _setsockopt()
138 		ctx->optlen = 5;  in _setsockopt()
143 	if (ctx->level == SOL_IP && ctx->optname == IP_FREEBIND) {  in _setsockopt()
145 		if (ctx->optlen != PAGE_SIZE * 2)  in _setsockopt()
153 		ctx->optlen = 1;  in _setsockopt()
165 	if (ctx->level != SOL_CUSTOM)  in _setsockopt()
171 	storage = bpf_sk_storage_get(&socket_storage_map, ctx->sk, 0,  in _setsockopt()
177 	ctx->optlen = -1; /* BPF has consumed this option, don't call kernel  in _setsockopt()