From 0cc14182aba961f4c34a21dd202ce6e4a87470f5 Mon Sep 17 00:00:00 2001 From: Andrew Melnychenko Date: Mon, 5 Feb 2024 18:54:35 +0200 Subject: ebpf: Updated eBPF program and skeleton. Updated section name, so libbpf should init/gues proper program type without specifications during open/load. Also, added map_flags with explicitly declared BPF_F_MMAPABLE. Added check for BPF_F_MMAPABLE flag to meson script and requirements to libbpf version. Also changed fragmentation flag check - some TCP/UDP packets may be considered fragmented if DF flag is set. Signed-off-by: Andrew Melnychenko Signed-off-by: Jason Wang --- tools/ebpf/rss.bpf.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'tools/ebpf/rss.bpf.c') diff --git a/tools/ebpf/rss.bpf.c b/tools/ebpf/rss.bpf.c index 20f227e2ac..9715d1170e 100644 --- a/tools/ebpf/rss.bpf.c +++ b/tools/ebpf/rss.bpf.c @@ -81,6 +81,7 @@ struct { __uint(key_size, sizeof(__u32)); __uint(value_size, sizeof(struct rss_config_t)); __uint(max_entries, 1); + __uint(map_flags, BPF_F_MMAPABLE); } tap_rss_map_configurations SEC(".maps"); struct { @@ -88,6 +89,7 @@ struct { __uint(key_size, sizeof(__u32)); __uint(value_size, sizeof(struct toeplitz_key_data_t)); __uint(max_entries, 1); + __uint(map_flags, BPF_F_MMAPABLE); } tap_rss_map_toeplitz_key SEC(".maps"); struct { @@ -95,6 +97,7 @@ struct { __uint(key_size, sizeof(__u32)); __uint(value_size, sizeof(__u16)); __uint(max_entries, INDIRECTION_TABLE_SIZE); + __uint(map_flags, BPF_F_MMAPABLE); } tap_rss_map_indirection_table SEC(".maps"); static inline void net_rx_rss_add_chunk(__u8 *rss_input, size_t *bytes_written, @@ -317,7 +320,7 @@ static inline int parse_packet(struct __sk_buff *skb, info->in_src = ip.saddr; info->in_dst = ip.daddr; - info->is_fragmented = !!ip.frag_off; + info->is_fragmented = !!(bpf_ntohs(ip.frag_off) & (0x2000 | 0x1fff)); l4_protocol = ip.protocol; l4_offset = ip.ihl * 4; @@ -528,7 +531,7 @@ static inline __u32 calculate_rss_hash(struct __sk_buff *skb, return result; } -SEC("tun_rss_steering") +SEC("socket") int tun_rss_steering_prog(struct __sk_buff *skb) { -- cgit 1.4.1