T5286: drop XDP support for ethernet and bonding interfaces

... this is a step towards a new and better implementation that will utilize
VPP.

1 files changed, 0 insertions, 244 deletions

diff --git a/src/xdp/common/parsing_helpers.h b/src/xdp/common/parsing_helpers.h
deleted file mode 100644
index c0837e88f..000000000
--- a/src/xdp/common/parsing_helpers.h
+++ /dev/null
@@ -1,244 +0,0 @@
-/* SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-clause) */
-/*
- * This file contains parsing functions that are used in the packetXX XDP
- * programs. The functions are marked as __always_inline, and fully defined in
- * this header file to be included in the BPF program.
- *
- * Each helper parses a packet header, including doing bounds checking, and
- * returns the type of its contents if successful, and -1 otherwise.
- *
- * For Ethernet and IP headers, the content type is the type of the payload
- * (h_proto for Ethernet, nexthdr for IPv6), for ICMP it is the ICMP type field.
- * All return values are in host byte order.
- *
- * The versions of the functions included here are slightly expanded versions of
- * the functions in the packet01 lesson. For instance, the Ethernet header
- * parsing has support for parsing VLAN tags.
- */
-
-#ifndef __PARSING_HELPERS_H
-#define __PARSING_HELPERS_H
-
-#include <stddef.h>
-#include <linux/if_ether.h>
-#include <linux/if_packet.h>
-#include <linux/ip.h>
-#include <linux/ipv6.h>
-#include <linux/icmp.h>
-#include <linux/icmpv6.h>
-#include <linux/udp.h>
-#include <linux/tcp.h>
-
-/* Header cursor to keep track of current parsing position */
-struct hdr_cursor {
-	void *pos;
-};
-
-/*
- *	struct vlan_hdr - vlan header
- *	@h_vlan_TCI: priority and VLAN ID
- *	@h_vlan_encapsulated_proto: packet type ID or len
- */
-struct vlan_hdr {
-	__be16	h_vlan_TCI;
-	__be16	h_vlan_encapsulated_proto;
-};
-
-/*
- * Struct icmphdr_common represents the common part of the icmphdr and icmp6hdr
- * structures.
- */
-struct icmphdr_common {
-	__u8		type;
-	__u8		code;
-	__sum16	cksum;
-};
-
-/* Allow users of header file to redefine VLAN max depth */
-#ifndef VLAN_MAX_DEPTH
-#define VLAN_MAX_DEPTH 4
-#endif
-
-static __always_inline int proto_is_vlan(__u16 h_proto)
-{
-	return !!(h_proto == bpf_htons(ETH_P_8021Q) ||
-		  h_proto == bpf_htons(ETH_P_8021AD));
-}
-
-/* Notice, parse_ethhdr() will skip VLAN tags, by advancing nh->pos and returns
- * next header EtherType, BUT the ethhdr pointer supplied still points to the
- * Ethernet header. Thus, caller can look at eth->h_proto to see if this was a
- * VLAN tagged packet.
- */
-static __always_inline int parse_ethhdr(struct hdr_cursor *nh, void *data_end,
-					struct ethhdr **ethhdr)
-{
-	struct ethhdr *eth = nh->pos;
-	int hdrsize = sizeof(*eth);
-	struct vlan_hdr *vlh;
-	__u16 h_proto;
-	int i;
-
-	/* Byte-count bounds check; check if current pointer + size of header
-	 * is after data_end.
-	 */
-	if (nh->pos + hdrsize > data_end)
-		return -1;
-
-	nh->pos += hdrsize;
-	*ethhdr = eth;
-	vlh = nh->pos;
-	h_proto = eth->h_proto;
-
-	/* Use loop unrolling to avoid the verifier restriction on loops;
-	 * support up to VLAN_MAX_DEPTH layers of VLAN encapsulation.
-	 */
-	#pragma unroll
-	for (i = 0; i < VLAN_MAX_DEPTH; i++) {
-		if (!proto_is_vlan(h_proto))
-			break;
-
-		if (vlh + 1 > data_end)
-			break;
-
-		h_proto = vlh->h_vlan_encapsulated_proto;
-		vlh++;
-	}
-
-	nh->pos = vlh;
-	return h_proto; /* network-byte-order */
-}
-
-static __always_inline int parse_ip6hdr(struct hdr_cursor *nh,
-					void *data_end,
-					struct ipv6hdr **ip6hdr)
-{
-	struct ipv6hdr *ip6h = nh->pos;
-
-	/* Pointer-arithmetic bounds check; pointer +1 points to after end of
-	 * thing being pointed to. We will be using this style in the remainder
-	 * of the tutorial.
-	 */
-	if (ip6h + 1 > data_end)
-		return -1;
-
-	nh->pos = ip6h + 1;
-	*ip6hdr = ip6h;
-
-	return ip6h->nexthdr;
-}
-
-static __always_inline int parse_iphdr(struct hdr_cursor *nh,
-				       void *data_end,
-				       struct iphdr **iphdr)
-{
-	struct iphdr *iph = nh->pos;
-	int hdrsize;
-
-	if (iph + 1 > data_end)
-		return -1;
-
-	hdrsize = iph->ihl * 4;
-
-	/* Variable-length IPv4 header, need to use byte-based arithmetic */
-	if (nh->pos + hdrsize > data_end)
-		return -1;
-
-	nh->pos += hdrsize;
-	*iphdr = iph;
-
-	return iph->protocol;
-}
-
-static __always_inline int parse_icmp6hdr(struct hdr_cursor *nh,
-					  void *data_end,
-					  struct icmp6hdr **icmp6hdr)
-{
-	struct icmp6hdr *icmp6h = nh->pos;
-
-	if (icmp6h + 1 > data_end)
-		return -1;
-
-	nh->pos   = icmp6h + 1;
-	*icmp6hdr = icmp6h;
-
-	return icmp6h->icmp6_type;
-}
-
-static __always_inline int parse_icmphdr(struct hdr_cursor *nh,
-					 void *data_end,
-					 struct icmphdr **icmphdr)
-{
-	struct icmphdr *icmph = nh->pos;
-
-	if (icmph + 1 > data_end)
-		return -1;
-
-	nh->pos  = icmph + 1;
-	*icmphdr = icmph;
-
-	return icmph->type;
-}
-
-static __always_inline int parse_icmphdr_common(struct hdr_cursor *nh,
-						void *data_end,
-						struct icmphdr_common **icmphdr)
-{
-	struct icmphdr_common *h = nh->pos;
-
-	if (h + 1 > data_end)
-		return -1;
-
-	nh->pos  = h + 1;
-	*icmphdr = h;
-
-	return h->type;
-}
-
-/*
- * parse_udphdr: parse the udp header and return the length of the udp payload
- */
-static __always_inline int parse_udphdr(struct hdr_cursor *nh,
-					void *data_end,
-					struct udphdr **udphdr)
-{
-	int len;
-	struct udphdr *h = nh->pos;
-
-	if (h + 1 > data_end)
-		return -1;
-
-	nh->pos  = h + 1;
-	*udphdr = h;
-
-	len = bpf_ntohs(h->len) - sizeof(struct udphdr);
-	if (len < 0)
-		return -1;
-
-	return len;
-}
-
-/*
- * parse_tcphdr: parse and return the length of the tcp header
- */
-static __always_inline int parse_tcphdr(struct hdr_cursor *nh,
-					void *data_end,
-					struct tcphdr **tcphdr)
-{
-	int len;
-	struct tcphdr *h = nh->pos;
-
-	if (h + 1 > data_end)
-		return -1;
-
-	len = h->doff * 4;
-	if ((void *) h + len > data_end)
-		return -1;
-
-	nh->pos  = h + 1;
-	*tcphdr = h;
-
-	return len;
-}
-
-#endif /* __PARSING_HELPERS_H */