Add helper which fill device's ipv4 addr to the specified proto field.
It will be used by such protos like ARP, IPv4, etc.
Signed-off-by: Vadim Kochan <vadi...@gmail.com>
---
trafgen_proto.c | 32 ++++++++++++++++++++++++++++++++
trafgen_proto.h | 3 +++
2 files changed, 35 insertions(+)
diff --git a/trafgen_proto.c b/trafgen_proto.c
index efa6803..dac806e 100644
--- a/trafgen_proto.c
+++ b/trafgen_proto.c
@@ -5,6 +5,7 @@
#include <stddef.h>
#include <string.h>
+#include <netinet/in.h>
#include <linux/if_ether.h>
#include "dev.h"
@@ -326,6 +327,37 @@ void proto_field_set_default_dev_mac(struct proto_hdr
*hdr, uint32_t fid)
__proto_field_set_dev_mac(hdr, fid, true);
}
+static void __proto_field_set_dev_ipv4(struct proto_hdr *hdr, uint32_t fid,
+ bool is_default)
+{
+ struct sockaddr_storage ss = { };
+ struct sockaddr_in *ss4;
+ uint32_t ip_addr;
+ int ret;
+
+ if (proto_field_is_set(hdr, fid))
+ return;
+
+ ret = device_address(hdr->ctx->dev, AF_INET, &ss);
+ if (ret < 0)
+ panic("Could not get device IPv4 address\n");
+
+ ss4 = (struct sockaddr_in *) &ss;
+ ip_addr = ss4->sin_addr.s_addr;
+
+ __proto_field_set_bytes(hdr, fid, (uint8_t *)&ip_addr, is_default,
false);
+}
+
+void proto_field_set_dev_ipv4(struct proto_hdr *hdr, uint32_t fid)
+{
+ __proto_field_set_dev_ipv4(hdr, fid, false);
+}
+
+void proto_field_set_default_dev_ipv4(struct proto_hdr *hdr, uint32_t fid)
+{
+ __proto_field_set_dev_ipv4(hdr, fid, true);
+}
+
void protos_init(char *dev)
{
struct proto_hdr *p;
diff --git a/trafgen_proto.h b/trafgen_proto.h
index 4041c27..b0578e3 100644
--- a/trafgen_proto.h
+++ b/trafgen_proto.h
@@ -96,4 +96,7 @@ extern void proto_field_set_default_be32(struct proto_hdr
*hdr, uint32_t fid,
extern void proto_field_set_dev_mac(struct proto_hdr *hdr, uint32_t fid);
extern void proto_field_set_default_dev_mac(struct proto_hdr *hdr, uint32_t
fid);
+extern void proto_field_set_dev_ipv4(struct proto_hdr *hdr, uint32_t fid);
+extern void proto_field_set_default_dev_ipv4(struct proto_hdr *hdr, uint32_t
fid);
+
#endif /* TRAFGEN_PROTO_I_H */
--
2.6.3
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