0002-two-extension-headers.patch - Linux Kernel GTP-U - Open Source Mobile Communications

Bug #6212 » 0002-two-extension-headers.patch

pablo, 10/06/2023 11:16 AM

+    {
     	int payload_len = skb->len;
     	struct gtp1_header_long *gtp1;
     	char ext_hdr[4] = { 0x01, 0x00, 0xff, 0x00}; /* extension header */
     	/* length (including exthdr in 4-byte words, payload (variable), next. */
     	char ext_hdr[8] = { 0x01, 0x00, 0xff, 0x33, 0x01, 0x00, 0xff, 0x00}; /* extension header */
     	gtp1 = skb_push(skb, sizeof(*gtp1) + sizeof(ext_hdr));
     	memset(gtp1, 0, sizeof(*gtp1) + sizeof(ext_hdr));
-...
     	 */
     	gtp1->flags	= 0x30; /* v1, GTP-non-prime. */
     	gtp1->type	= GTP_TPDU;
     	gtp1->length	= htons(payload_len);
     	/* TS 29.060: "The Sequence Number, the N-PDU Number or any Extension
     	 * headers shall be considered to be part of the payload, i.e. included
     	 * in the length count".
     	 */
     	gtp1->length	= htons(payload_len + 4 + sizeof(ext_hdr));
     	gtp1->tid	= htonl(pctx->u.v1.o_tei);
     	gtp1->next	= 0x32;

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