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C++ skb_mac_header函数代码示例

本文整理汇总了C++中skb_mac_header函数的典型用法代码示例。如果您正苦于以下问题：C++ skb_mac_header函数的具体用法？C++ skb_mac_header怎么用？C++ skb_mac_header使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了skb_mac_header函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: pop_mpls

static int pop_mpls(struct sk_buff *skb, const __be16 ethertype)
{
	struct ethhdr *hdr;
	int err;

	err = make_writable(skb, skb->mac_len + MPLS_HLEN);
	if (unlikely(err))
		return err;

	if (skb->ip_summed == CHECKSUM_COMPLETE)
		skb->csum = csum_sub(skb->csum,
				     csum_partial(mac_header_end(skb),
						  MPLS_HLEN, 0));

	memmove(skb_mac_header(skb) + MPLS_HLEN, skb_mac_header(skb),
		skb->mac_len);

	__skb_pull(skb, MPLS_HLEN);
	skb_reset_mac_header(skb);

	/* mac_header_end() is used to locate the ethertype
	 * field correctly in the presence of VLAN tags.
	 */
	hdr = (struct ethhdr *)(mac_header_end(skb) - ETH_HLEN);
	hdr->h_proto = ethertype;
	if (eth_p_mpls(skb->protocol))
		skb->protocol = ethertype;
	return 0;
}
开发者ID:alexpilotti，项目名称:ovs-test1，代码行数:29，代码来源:actions.c

示例2: pop_mpls

static int pop_mpls(struct sk_buff *skb, struct sw_flow_key *key,
		    const __be16 ethertype)
{
	struct ethhdr *hdr;
	int err;

	err = skb_ensure_writable(skb, skb->mac_len + MPLS_HLEN);
	if (unlikely(err))
		return err;

	skb_postpull_rcsum(skb, skb_mpls_header(skb), MPLS_HLEN);

	memmove(skb_mac_header(skb) + MPLS_HLEN, skb_mac_header(skb),
		skb->mac_len);

	__skb_pull(skb, MPLS_HLEN);
	skb_reset_mac_header(skb);

	/* skb_mpls_header() is used to locate the ethertype
	 * field correctly in the presence of VLAN tags.
	 */
	hdr = (struct ethhdr *)(skb_mpls_header(skb) - ETH_HLEN);
	hdr->h_proto = ethertype;
	if (eth_p_mpls(skb->protocol))
		skb->protocol = ethertype;

	invalidate_flow_key(key);
	return 0;
}
开发者ID:Seagate，项目名称:SMR_FS-EXT4，代码行数:29，代码来源:actions.c

示例3: ipcomp_output

int ipcomp_output(struct xfrm_state *x, struct sk_buff *skb)
{
	int err;
	struct ip_comp_hdr *ipch;
	struct ipcomp_data *ipcd = x->data;

	if (skb->len < ipcd->threshold) {
		
		goto out_ok;
	}

	if (skb_linearize_cow(skb))
		goto out_ok;

	err = ipcomp_compress(x, skb);

	if (err) {
		goto out_ok;
	}

	
	ipch = ip_comp_hdr(skb);
	ipch->nexthdr = *skb_mac_header(skb);
	ipch->flags = 0;
	ipch->cpi = htons((u16 )ntohl(x->id.spi));
	*skb_mac_header(skb) = IPPROTO_COMP;
out_ok:
	skb_push(skb, -skb_network_offset(skb));
	return 0;
}
开发者ID:Albinoman887，项目名称:pyramid-3.4.10，代码行数:30，代码来源:xfrm_ipcomp.c

示例4: match

static bool match(const struct sk_buff *skb, struct xt_action_param *par)
{
	unsigned char eui64[8];
	int i = 0;

	if (!(skb_mac_header(skb) >= skb->head &&
	      (skb_mac_header(skb) + ETH_HLEN) <= skb->data) &&
	    par->fragoff != 0) {
		par->hotdrop = true;
		return false;
	}

	memset(eui64, 0, sizeof(eui64));

	if (eth_hdr(skb)->h_proto == htons(ETH_P_IPV6)) {
		if (ipv6_hdr(skb)->version == 0x6) {
			memcpy(eui64, eth_hdr(skb)->h_source, 3);
			memcpy(eui64 + 5, eth_hdr(skb)->h_source + 3, 3);
			eui64[3] = 0xff;
			eui64[4] = 0xfe;
			eui64[0] ^= 0x02;

			i = 0;
			while ((ipv6_hdr(skb)->saddr.s6_addr[8 + i] == eui64[i])
			       && (i < 8))
				i++;

			if (i == 8)
				return true;
		}
	}

	return false;
}
开发者ID:Mr-Aloof，项目名称:wl500g，代码行数:34，代码来源:ip6t_eui64.c

示例5: xfrm4_mode_tunnel_input

static int xfrm4_mode_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
{
	const unsigned char *old_mac;
	int err = -EINVAL;

	if (XFRM_MODE_SKB_CB(skb)->protocol != IPPROTO_IPIP)
		goto out;

	if (!pskb_may_pull(skb, sizeof(struct iphdr)))
		goto out;

	if (skb_cloned(skb) &&
	    (err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC)))
		goto out;

	if (x->props.flags & XFRM_STATE_DECAP_DSCP)
		ipv4_copy_dscp(XFRM_MODE_SKB_CB(skb)->tos, ipip_hdr(skb));
	if (!(x->props.flags & XFRM_STATE_NOECN))
		ipip_ecn_decapsulate(skb);

	old_mac = skb_mac_header(skb);
	skb_set_mac_header(skb, -skb->mac_len);
	memmove(skb_mac_header(skb), old_mac, skb->mac_len);
	skb_reset_network_header(skb);
	err = 0;

out:
	return err;
}
开发者ID:johnny，项目名称:CobraDroidBeta，代码行数:29，代码来源:xfrm4_mode_tunnel.c

示例6: xfrm6_beet_input

static int xfrm6_beet_input(struct xfrm_state *x, struct sk_buff *skb)
{
	struct ipv6hdr *ip6h;
	const unsigned char *old_mac;
	int size = sizeof(struct ipv6hdr);
	int err;

	err = skb_cow_head(skb, size + skb->mac_len);
	if (err)
		goto out;

	__skb_push(skb, size);
	skb_reset_network_header(skb);

	old_mac = skb_mac_header(skb);
	skb_set_mac_header(skb, -skb->mac_len);
	memmove(skb_mac_header(skb), old_mac, skb->mac_len);

	xfrm6_beet_make_header(skb);

	ip6h = ipv6_hdr(skb);
	ip6h->payload_len = htons(skb->len - size);
	ipv6_addr_copy(&ip6h->daddr, (struct in6_addr *) &x->sel.daddr.a6);
	ipv6_addr_copy(&ip6h->saddr, (struct in6_addr *) &x->sel.saddr.a6);
	err = 0;
out:
	return err;
}
开发者ID:CSCLOG，项目名称:beaglebone，代码行数:28，代码来源:xfrm6_mode_beet.c

示例7: bitmap_ipmac_kadt

static int
bitmap_ipmac_kadt(struct ip_set *set, const struct sk_buff *skb,
		  const struct xt_action_param *par,
		  enum ipset_adt adt, const struct ip_set_adt_opt *opt)
{
	struct bitmap_ipmac *map = set->data;
	ipset_adtfn adtfn = set->variant->adt[adt];
	struct ipmac data;

	/* MAC can be src only */
	if (!(opt->flags & IPSET_DIM_TWO_SRC))
		return 0;

	data.id = ntohl(ip4addr(skb, opt->flags & IPSET_DIM_ONE_SRC));
	if (data.id < map->first_ip || data.id > map->last_ip)
		return -IPSET_ERR_BITMAP_RANGE;

	/* Backward compatibility: we don't check the second flag */
	if (skb_mac_header(skb) < skb->head ||
	    (skb_mac_header(skb) + ETH_HLEN) > skb->data)
		return -EINVAL;

	data.id -= map->first_ip;
	data.ether = eth_hdr(skb)->h_source;

	return adtfn(set, &data, opt_timeout(opt, map), opt->cmdflags);
}
开发者ID:ARMWorks，项目名称:FA_2451_Linux_Kernel，代码行数:27，代码来源:ip_set_bitmap_ipmac.c

示例8: push_mpls

static int push_mpls(struct sk_buff *skb, struct sw_flow_key *key,
		     const struct ovs_action_push_mpls *mpls)
{
	__be32 *new_mpls_lse;
	struct ethhdr *hdr;

	/* Networking stack do not allow simultaneous Tunnel and MPLS GSO. */
	if (skb->encapsulation)
		return -ENOTSUPP;

	if (skb_cow_head(skb, MPLS_HLEN) < 0)
		return -ENOMEM;

	skb_push(skb, MPLS_HLEN);
	memmove(skb_mac_header(skb) - MPLS_HLEN, skb_mac_header(skb),
		skb->mac_len);
	skb_reset_mac_header(skb);

	new_mpls_lse = (__be32 *)skb_mpls_header(skb);
	*new_mpls_lse = mpls->mpls_lse;

	if (skb->ip_summed == CHECKSUM_COMPLETE)
		skb->csum = csum_add(skb->csum, csum_partial(new_mpls_lse,
							     MPLS_HLEN, 0));

	hdr = eth_hdr(skb);
	hdr->h_proto = mpls->mpls_ethertype;

	if (!skb->inner_protocol)
		skb_set_inner_protocol(skb, skb->protocol);
	skb->protocol = mpls->mpls_ethertype;

	invalidate_flow_key(key);
	return 0;
}
开发者ID:Seagate，项目名称:SMR_FS-EXT4，代码行数:35，代码来源:actions.c

示例9: push_mpls

static int push_mpls(struct sk_buff *skb, struct sw_flow_key *key,
		     const struct ovs_action_push_mpls *mpls)
{
	struct mpls_shim_hdr *new_mpls_lse;

	/* Networking stack do not allow simultaneous Tunnel and MPLS GSO. */
	if (skb->encapsulation)
		return -ENOTSUPP;

	if (skb_cow_head(skb, MPLS_HLEN) < 0)
		return -ENOMEM;

	if (!skb->inner_protocol) {
		skb_set_inner_network_header(skb, skb->mac_len);
		skb_set_inner_protocol(skb, skb->protocol);
	}

	skb_push(skb, MPLS_HLEN);
	memmove(skb_mac_header(skb) - MPLS_HLEN, skb_mac_header(skb),
		skb->mac_len);
	skb_reset_mac_header(skb);
	skb_set_network_header(skb, skb->mac_len);

	new_mpls_lse = mpls_hdr(skb);
	new_mpls_lse->label_stack_entry = mpls->mpls_lse;

	skb_postpush_rcsum(skb, new_mpls_lse, MPLS_HLEN);

	if (ovs_key_mac_proto(key) == MAC_PROTO_ETHERNET)
		update_ethertype(skb, eth_hdr(skb), mpls->mpls_ethertype);
	skb->protocol = mpls->mpls_ethertype;

	invalidate_flow_key(key);
	return 0;
}
开发者ID:AshishNamdev，项目名称:linux，代码行数:35，代码来源:actions.c

示例10: pop_mpls

static int pop_mpls(struct sk_buff *skb, struct sw_flow_key *key,
		    const __be16 ethertype)
{
	int err;

	err = skb_ensure_writable(skb, skb->mac_len + MPLS_HLEN);
	if (unlikely(err))
		return err;

	skb_postpull_rcsum(skb, mpls_hdr(skb), MPLS_HLEN);

	memmove(skb_mac_header(skb) + MPLS_HLEN, skb_mac_header(skb),
		skb->mac_len);

	__skb_pull(skb, MPLS_HLEN);
	skb_reset_mac_header(skb);
	skb_set_network_header(skb, skb->mac_len);

	if (ovs_key_mac_proto(key) == MAC_PROTO_ETHERNET) {
		struct ethhdr *hdr;

		/* mpls_hdr() is used to locate the ethertype field correctly in the
		 * presence of VLAN tags.
		 */
		hdr = (struct ethhdr *)((void *)mpls_hdr(skb) - ETH_HLEN);
		update_ethertype(skb, hdr, ethertype);
	}
	if (eth_p_mpls(skb->protocol))
		skb->protocol = ethertype;

	invalidate_flow_key(key);
	return 0;
}
开发者ID:AshishNamdev，项目名称:linux，代码行数:33，代码来源:actions.c

示例11: push_mpls

static int push_mpls(struct sk_buff *skb, struct sw_flow_key *key,
		     const struct ovs_action_push_mpls *mpls)
{
	__be32 *new_mpls_lse;

	/* Networking stack do not allow simultaneous Tunnel and MPLS GSO. */
	if (skb->encapsulation)
		return -ENOTSUPP;

	if (skb_cow_head(skb, MPLS_HLEN) < 0)
		return -ENOMEM;

	skb_push(skb, MPLS_HLEN);
	memmove(skb_mac_header(skb) - MPLS_HLEN, skb_mac_header(skb),
		skb->mac_len);
	skb_reset_mac_header(skb);

	new_mpls_lse = (__be32 *)skb_mpls_header(skb);
	*new_mpls_lse = mpls->mpls_lse;

	skb_postpush_rcsum(skb, new_mpls_lse, MPLS_HLEN);

	update_ethertype(skb, eth_hdr(skb), mpls->mpls_ethertype);
	if (!skb->inner_protocol)
		skb_set_inner_protocol(skb, skb->protocol);
	skb->protocol = mpls->mpls_ethertype;

	invalidate_flow_key(key);
	return 0;
}
开发者ID:513855417，项目名称:linux，代码行数:30，代码来源:actions.c

示例12: push_mpls

static int push_mpls(struct sk_buff *skb,
		     const struct ovs_action_push_mpls *mpls)
{
	__be32 *new_mpls_lse;
	struct ethhdr *hdr;

	if (skb_cow_head(skb, MPLS_HLEN) < 0)
		return -ENOMEM;

	skb_push(skb, MPLS_HLEN);
	memmove(skb_mac_header(skb) - MPLS_HLEN, skb_mac_header(skb),
		skb->mac_len);
	skb_reset_mac_header(skb);

	new_mpls_lse = (__be32 *)mac_header_end(skb);
	*new_mpls_lse = mpls->mpls_lse;

	if (skb->ip_summed == CHECKSUM_COMPLETE)
		skb->csum = csum_add(skb->csum, csum_partial(new_mpls_lse,
							     MPLS_HLEN, 0));

	hdr = eth_hdr(skb);
	hdr->h_proto = mpls->mpls_ethertype;
	if (!ovs_skb_get_inner_protocol(skb))
		ovs_skb_set_inner_protocol(skb, skb->protocol);
	skb->protocol = mpls->mpls_ethertype;
	return 0;
}
开发者ID:alexpilotti，项目名称:ovs-test1，代码行数:28，代码来源:actions.c

示例13: dump_ipv6_mac_header

static void dump_ipv6_mac_header(struct nf_log_buf *m,
				 const struct nf_loginfo *info,
				 const struct sk_buff *skb)
{
	struct net_device *dev = skb->dev;
	unsigned int logflags = 0;

	if (info->type == NF_LOG_TYPE_LOG)
		logflags = info->u.log.logflags;

	if (!(logflags & NF_LOG_MACDECODE))
		goto fallback;

	switch (dev->type) {
	case ARPHRD_ETHER:
		nf_log_buf_add(m, "MACSRC=%pM MACDST=%pM MACPROTO=%04x ",
		       eth_hdr(skb)->h_source, eth_hdr(skb)->h_dest,
		       ntohs(eth_hdr(skb)->h_proto));
		return;
	default:
		break;
	}

fallback:
	nf_log_buf_add(m, "MAC=");
	if (dev->hard_header_len &&
	    skb->mac_header != skb->network_header) {
		const unsigned char *p = skb_mac_header(skb);
		unsigned int len = dev->hard_header_len;
		unsigned int i;

		if (dev->type == ARPHRD_SIT) {
			p -= ETH_HLEN;

			if (p < skb->head)
				p = NULL;
		}

		if (p != NULL) {
			nf_log_buf_add(m, "%02x", *p++);
			for (i = 1; i < len; i++)
				nf_log_buf_add(m, ":%02x", *p++);
		}
		nf_log_buf_add(m, " ");

		if (dev->type == ARPHRD_SIT) {
			const struct iphdr *iph =
				(struct iphdr *)skb_mac_header(skb);
			nf_log_buf_add(m, "TUNNEL=%pI4->%pI4 ", &iph->saddr,
				       &iph->daddr);
		}
	} else {
		nf_log_buf_add(m, " ");
	}
}
开发者ID:AshishNamdev，项目名称:linux，代码行数:55，代码来源:nf_log_ipv6.c

示例14: ip6t_log_packet

static void
ip6t_log_packet(unsigned int pf,
        unsigned int hooknum,
        const struct sk_buff *skb,
        const struct net_device *in,
        const struct net_device *out,
        const struct nf_loginfo *loginfo,
        const char *prefix)
{
    if (!loginfo)
        loginfo = &default_loginfo;

    spin_lock_bh(&log_lock);
    printk("<%d>%sIN=%s OUT=%s ", loginfo->u.log.level,
        prefix,
        in ? in->name : "",
        out ? out->name : "");
    if (in && !out) {
        unsigned int len;
        /* MAC logging for input chain only. */
        printk("MAC=");
        if (skb->dev && (len = skb->dev->hard_header_len) &&
            skb->mac_header != skb->network_header) {
            const unsigned char *p = skb_mac_header(skb);
            int i;

            if (skb->dev->type == ARPHRD_SIT &&
                (p -= ETH_HLEN) < skb->head)
                p = NULL;

            if (p != NULL) {
                for (i = 0; i < len; i++)
                    printk("%02x%s", p[i],
                           i == len - 1 ? "" : ":");
            }
            printk(" ");

            if (skb->dev->type == ARPHRD_SIT) {
                const struct iphdr *iph =
                    (struct iphdr *)skb_mac_header(skb);
                printk("TUNNEL=%u.%u.%u.%u->%u.%u.%u.%u ",
                       NIPQUAD(iph->saddr),
                       NIPQUAD(iph->daddr));
            }
        } else
            printk(" ");
    }

    dump_packet(loginfo, skb, skb_network_offset(skb), 1);
    printk("\n");
    spin_unlock_bh(&log_lock);
}
开发者ID:274914765，项目名称:C，代码行数:52，代码来源:ip6t_LOG.c

示例15: mac_mt

static bool mac_mt(const struct sk_buff *skb, struct xt_action_param *par)
{
	const struct xt_mac_info *info = par->matchinfo;
	bool ret;

	if (skb->dev == NULL || skb->dev->type != ARPHRD_ETHER)
		return false;
	if (skb_mac_header(skb) < skb->head)
		return false;
	if (skb_mac_header(skb) + ETH_HLEN > skb->data)
		return false;
	ret  = compare_ether_addr(eth_hdr(skb)->h_source, info->srcaddr) == 0;
	ret ^= info->invert;
	return ret;
}
开发者ID:flwh，项目名称:Alcatel_OT_985_kernel，代码行数:15，代码来源:xt_mac.c


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