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This commit is contained in:
Alfonso Acosta
2016-04-12 10:59:08 +00:00
committed by Paul Bellamy
parent efd62ac5b3
commit dfa93fe2f1
2 changed files with 3 additions and 3 deletions
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2
examples/plugins/ebpf/Makefile
View File

@@ -1,7 +1,7 @@
.PHONY: run clean
IMAGE=weavescope-http-requests-plugin
UPTODATE=.$(EXE).uptodate
UPTODATE=.uptodate
run: $(UPTODATE)
docker run --rm -it \

4
examples/plugins/ebpf/http-requests.c
View File

@@ -18,7 +18,7 @@ BPF_HASH(received_http_requests, struct received_http_requests_key_t, u64);
int kprobe__skb_copy_datagram_iter(struct pt_regs *ctx, const struct sk_buff *skb, int offset, void *unused_iovec, int len)
{
/* Inspect the beginning of docket buffers copied to user-space to determine if they
/* Inspect the beginning of socket buffers copied to user-space to determine if they
correspond to http requests.
Caveats:
@@ -49,7 +49,7 @@ int kprobe__skb_copy_datagram_iter(struct pt_regs *ctx, const struct sk_buff *sk
bpf_probe_read(&data, sizeof(data), skb->data + offset);
/* TODO: support other methods and optimize lookups */
if ((data[0] == 'G') && (data[1] == 'E') && (data[2] == 'T')) {
if ((data[0] == 'G') && (data[1] == 'E') && (data[2] == 'T') && (data[3] == ' ')) {
/* Record request */
struct received_http_requests_key_t key = {};
key.pid = bpf_get_current_pid_tgid() >> 32;