Release 4.15 net/ipv4/ah4.c

#define pr_fmt(fmt) "IPsec: " fmt

#include <crypto/algapi.h>
#include <crypto/hash.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <net/ip.h>
#include <net/xfrm.h>
#include <net/ah.h>
#include <linux/crypto.h>
#include <linux/pfkeyv2.h>
#include <linux/scatterlist.h>
#include <net/icmp.h>
#include <net/protocol.h>


struct ah_skb_cb {
	
struct xfrm_skb_cb xfrm;
	
void *tmp;
};


#define AH_SKB_CB(__skb) ((struct ah_skb_cb *)&((__skb)->cb[0]))



static void *ah_alloc_tmp(struct crypto_ahash *ahash, int nfrags,
			  unsigned int size)
{
	unsigned int len;

	len = size + crypto_ahash_digestsize(ahash) +
	      (crypto_ahash_alignmask(ahash) &
	       ~(crypto_tfm_ctx_alignment() - 1));

	len = ALIGN(len, crypto_tfm_ctx_alignment());

	len += sizeof(struct ahash_request) + crypto_ahash_reqsize(ahash);
	len = ALIGN(len, __alignof__(struct scatterlist));

	len += sizeof(struct scatterlist) * nfrags;

	return kmalloc(len, GFP_ATOMIC);
}

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static inline u8 *ah_tmp_auth(void *tmp, unsigned int offset)
{
	return tmp + offset;
}

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static inline u8 *ah_tmp_icv(struct crypto_ahash *ahash, void *tmp,
			     unsigned int offset)
{
	return PTR_ALIGN((u8 *)tmp + offset, crypto_ahash_alignmask(ahash) + 1);
}

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static inline struct ahash_request *ah_tmp_req(struct crypto_ahash *ahash,
					       u8 *icv)
{
	struct ahash_request *req;

	req = (void *)PTR_ALIGN(icv + crypto_ahash_digestsize(ahash),
				crypto_tfm_ctx_alignment());

	ahash_request_set_tfm(req, ahash);

	return req;
}

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static inline struct scatterlist *ah_req_sg(struct crypto_ahash *ahash,
					     struct ahash_request *req)
{
	return (void *)ALIGN((unsigned long)(req + 1) +
			     crypto_ahash_reqsize(ahash),
			     __alignof__(struct scatterlist));
}

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/* Clear mutable options and find final destination to substitute
 * into IP header for icv calculation. Options are already checked
 * for validity, so paranoia is not required. */



static int ip_clear_mutable_options(const struct iphdr *iph, __be32 *daddr)
{
	unsigned char *optptr = (unsigned char *)(iph+1);
	int  l = iph->ihl*4 - sizeof(struct iphdr);
	int  optlen;

	while (l > 0) {
		switch (*optptr) {
		case IPOPT_END:
			return 0;
		case IPOPT_NOOP:
			l--;
			optptr++;
			continue;
		}
		optlen = optptr[1];
		if (optlen<2 || optlen>l)
			return -EINVAL;
		switch (*optptr) {
		case IPOPT_SEC:
		case 0x85:	/* Some "Extended Security" crap. */
		case IPOPT_CIPSO:
		case IPOPT_RA:
		case 0x80|21:	/* RFC1770 */
			break;
		case IPOPT_LSRR:
		case IPOPT_SSRR:
			if (optlen < 6)
				return -EINVAL;
			memcpy(daddr, optptr+optlen-4, 4);
			/* Fall through */
		default:
			memset(optptr, 0, optlen);
		}
		l -= optlen;
		optptr += optlen;
	}
	return 0;
}

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171
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5
2.78%
1
16.67%
Paul Moore
1
0.56%
1
16.67%
Al Viro
1
0.56%
1
16.67%
Eric Dumazet
1
0.56%
1
16.67%
James Morris
1
0.56%
1
16.67%
Total
180
100.00%
6
100.00%



static void ah_output_done(struct crypto_async_request *base, int err)
{
	u8 *icv;
	struct iphdr *iph;
	struct sk_buff *skb = base->data;
	struct xfrm_state *x = skb_dst(skb)->xfrm;
	struct ah_data *ahp = x->data;
	struct iphdr *top_iph = ip_hdr(skb);
	struct ip_auth_hdr *ah = ip_auth_hdr(skb);
	int ihl = ip_hdrlen(skb);

	iph = AH_SKB_CB(skb)->tmp;
	icv = ah_tmp_icv(ahp->ahash, iph, ihl);
	memcpy(ah->auth_data, icv, ahp->icv_trunc_len);

	top_iph->tos = iph->tos;
	top_iph->ttl = iph->ttl;
	top_iph->frag_off = iph->frag_off;
	if (top_iph->ihl != 5) {
		top_iph->daddr = iph->daddr;
		memcpy(top_iph+1, iph+1, top_iph->ihl*4 - sizeof(struct iphdr));
	}

	kfree(AH_SKB_CB(skb)->tmp);
	xfrm_output_resume(skb, err);
}

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Steffen Klassert
104
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9.09%
Alexey Kuznetsov
54
27.27%
2
18.18%
Herbert Xu
37
18.69%
6
54.55%
Arnaldo Carvalho de Melo
2
1.01%
1
9.09%
James Morris
1
0.51%
1
9.09%
Total
198
100.00%
11
100.00%



static int ah_output(struct xfrm_state *x, struct sk_buff *skb)
{
	int err;
	int nfrags;
	int ihl;
	u8 *icv;
	struct sk_buff *trailer;
	struct crypto_ahash *ahash;
	struct ahash_request *req;
	struct scatterlist *sg;
	struct iphdr *iph, *top_iph;
	struct ip_auth_hdr *ah;
	struct ah_data *ahp;
	int seqhi_len = 0;
	__be32 *seqhi;
	int sglists = 0;
	struct scatterlist *seqhisg;

	ahp = x->data;
	ahash = ahp->ahash;

	if ((err = skb_cow_data(skb, 0, &trailer)) < 0)
		goto out;
	nfrags = err;

	skb_push(skb, -skb_network_offset(skb));
	ah = ip_auth_hdr(skb);
	ihl = ip_hdrlen(skb);

	if (x->props.flags & XFRM_STATE_ESN) {
		sglists = 1;
		seqhi_len = sizeof(*seqhi);
	}
	err = -ENOMEM;
	iph = ah_alloc_tmp(ahash, nfrags + sglists, ihl + seqhi_len);
	if (!iph)
		goto out;
	seqhi = (__be32 *)((char *)iph + ihl);
	icv = ah_tmp_icv(ahash, seqhi, seqhi_len);
	req = ah_tmp_req(ahash, icv);
	sg = ah_req_sg(ahash, req);
	seqhisg = sg + nfrags;

	memset(ah->auth_data, 0, ahp->icv_trunc_len);

	top_iph = ip_hdr(skb);

	iph->tos = top_iph->tos;
	iph->ttl = top_iph->ttl;
	iph->frag_off = top_iph->frag_off;

	if (top_iph->ihl != 5) {
		iph->daddr = top_iph->daddr;
		memcpy(iph+1, top_iph+1, top_iph->ihl*4 - sizeof(struct iphdr));
		err = ip_clear_mutable_options(top_iph, &top_iph->daddr);
		if (err)
			goto out_free;
	}

	ah->nexthdr = *skb_mac_header(skb);
	*skb_mac_header(skb) = IPPROTO_AH;

	top_iph->tos = 0;
	top_iph->tot_len = htons(skb->len);
	top_iph->frag_off = 0;
	top_iph->ttl = 0;
	top_iph->check = 0;

	if (x->props.flags & XFRM_STATE_ALIGN4)
		ah->hdrlen  = (XFRM_ALIGN4(sizeof(*ah) + ahp->icv_trunc_len) >> 2) - 2;
	else
		ah->hdrlen  = (XFRM_ALIGN8(sizeof(*ah) + ahp->icv_trunc_len) >> 2) - 2;

	ah->reserved = 0;
	ah->spi = x->id.spi;
	ah->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output.low);

	sg_init_table(sg, nfrags + sglists);
	err = skb_to_sgvec_nomark(skb, sg, 0, skb->len);
	if (unlikely(err < 0))
		goto out_free;

	if (x->props.flags & XFRM_STATE_ESN) {
		/* Attach seqhi sg right after packet payload */
		*seqhi = htonl(XFRM_SKB_CB(skb)->seq.output.hi);
		sg_set_buf(seqhisg, seqhi, seqhi_len);
	}
	ahash_request_set_crypt(req, sg, icv, skb->len + seqhi_len);
	ahash_request_set_callback(req, 0, ah_output_done, skb);

	AH_SKB_CB(skb)->tmp = iph;

	err = crypto_ahash_digest(req);
	if (err) {
		if (err == -EINPROGRESS)
			goto out;

		if (err == -ENOSPC)
			err = NET_XMIT_DROP;
		goto out_free;
	}

	memcpy(ah->auth_data, icv, ahp->icv_trunc_len);

	top_iph->tos = iph->tos;
	top_iph->ttl = iph->ttl;
	top_iph->frag_off = iph->frag_off;
	if (top_iph->ihl != 5) {
		top_iph->daddr = iph->daddr;
		memcpy(top_iph+1, iph+1, top_iph->ihl*4 - sizeof(struct iphdr));
	}

out_free:
	kfree(iph);
out:
	return err;
}

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Steffen Klassert
522
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Fan Du
115
15.62%
1
8.33%
Nicolas Dichtel
34
4.62%
1
8.33%
Herbert Xu
24
3.26%
3
25.00%
Alexey Kuznetsov
22
2.99%
1
8.33%
Jason A. Donenfeld
14
1.90%
1
8.33%
James Morris
2
0.27%
1
8.33%
Hideaki Yoshifuji / 吉藤英明
2
0.27%
1
8.33%
Gilad Ben-Yossef
1
0.14%
1
8.33%
Total
736
100.00%
12
100.00%



static void ah_input_done(struct crypto_async_request *base, int err)
{
	u8 *auth_data;
	u8 *icv;
	struct iphdr *work_iph;
	struct sk_buff *skb = base->data;
	struct xfrm_state *x = xfrm_input_state(skb);
	struct ah_data *ahp = x->data;
	struct ip_auth_hdr *ah = ip_auth_hdr(skb);
	int ihl = ip_hdrlen(skb);
	int ah_hlen = (ah->hdrlen + 2) << 2;

	if (err)
		goto out;

	work_iph = AH_SKB_CB(skb)->tmp;
	auth_data = ah_tmp_auth(work_iph, ihl);
	icv = ah_tmp_icv(ahp->ahash, auth_data, ahp->icv_trunc_len);

	err = crypto_memneq(icv, auth_data, ahp->icv_trunc_len) ? -EBADMSG : 0;
	if (err)
		goto out;

	err = ah->nexthdr;

	skb->network_header += ah_hlen;
	memcpy(skb_network_header(skb), work_iph, ihl);
	__skb_pull(skb, ah_hlen + ihl);

	if (x->props.mode == XFRM_MODE_TUNNEL)
		skb_reset_transport_header(skb);
	else
		skb_set_transport_header(skb, -ihl);
out:
	kfree(AH_SKB_CB(skb)->tmp);
	xfrm_input_resume(skb, err);
}

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Steffen Klassert
148
65.20%
1
7.69%
Herbert Xu
23
10.13%
4
30.77%
Alexey Kuznetsov
22
9.69%
2
15.38%
Li RongQing
16
7.05%
1
7.69%
Gilad Ben-Yossef
7
3.08%
1
7.69%
Nick Bowler
6
2.64%
1
7.69%
Jamal Hadi Salim
2
0.88%
1
7.69%
Tom Lendacky
2
0.88%
1
7.69%
Sabrina Dubroca
1
0.44%
1
7.69%
Total
227
100.00%
13
100.00%



static int ah_input(struct xfrm_state *x, struct sk_buff *skb)
{
	int ah_hlen;
	int ihl;
	int nexthdr;
	int nfrags;
	u8 *auth_data;
	u8 *icv;
	struct sk_buff *trailer;
	struct crypto_ahash *ahash;
	struct ahash_request *req;
	struct scatterlist *sg;
	struct iphdr *iph, *work_iph;
	struct ip_auth_hdr *ah;
	struct ah_data *ahp;
	int err = -ENOMEM;
	int seqhi_len = 0;
	__be32 *seqhi;
	int sglists = 0;
	struct scatterlist *seqhisg;

	if (!pskb_may_pull(skb, sizeof(*ah)))
		goto out;

	ah = (struct ip_auth_hdr *)skb->data;
	ahp = x->data;
	ahash = ahp->ahash;

	nexthdr = ah->nexthdr;
	ah_hlen = (ah->hdrlen + 2) << 2;

	if (x->props.flags & XFRM_STATE_ALIGN4) {
		if (ah_hlen != XFRM_ALIGN4(sizeof(*ah) + ahp->icv_full_len) &&
		    ah_hlen != XFRM_ALIGN4(sizeof(*ah) + ahp->icv_trunc_len))
			goto out;
	} else {
		if (ah_hlen != XFRM_ALIGN8(sizeof(*ah) + ahp->icv_full_len) &&
		    ah_hlen != XFRM_ALIGN8(sizeof(*ah) + ahp->icv_trunc_len))
			goto out;
	}

	if (!pskb_may_pull(skb, ah_hlen))
		goto out;

	/* We are going to _remove_ AH header to keep sockets happy,
         * so... Later this can change. */
	if (skb_unclone(skb, GFP_ATOMIC))
		goto out;

	skb->ip_summed = CHECKSUM_NONE;


	if ((err = skb_cow_data(skb, 0, &trailer)) < 0)
		goto out;
	nfrags = err;

	ah = (struct ip_auth_hdr *)skb->data;
	iph = ip_hdr(skb);
	ihl = ip_hdrlen(skb);

	if (x->props.flags & XFRM_STATE_ESN) {
		sglists = 1;
		seqhi_len = sizeof(*seqhi);
	}

	work_iph = ah_alloc_tmp(ahash, nfrags + sglists, ihl +
				ahp->icv_trunc_len + seqhi_len);
	if (!work_iph) {
		err = -ENOMEM;
		goto out;
	}

	seqhi = (__be32 *)((char *)work_iph + ihl);
	auth_data = ah_tmp_auth(seqhi, seqhi_len);
	icv = ah_tmp_icv(ahash, auth_data, ahp->icv_trunc_len);
	req = ah_tmp_req(ahash, icv);
	sg = ah_req_sg(ahash, req);
	seqhisg = sg + nfrags;

	memcpy(work_iph, iph, ihl);
	memcpy(auth_data, ah->auth_data, ahp->icv_trunc_len);
	memset(ah->auth_data, 0, ahp->icv_trunc_len);

	iph->ttl = 0;
	iph->tos = 0;
	iph->frag_off = 0;
	iph->check = 0;
	if (ihl > sizeof(*iph)) {
		__be32 dummy;
		err = ip_clear_mutable_options(iph, &dummy);
		if (err)
			goto out_free;
	}

	skb_push(skb, ihl);

	sg_init_table(sg, nfrags + sglists);
	err = skb_to_sgvec_nomark(skb, sg, 0, skb->len);
	if (unlikely(err < 0))
		goto out_free;

	if (x->props.flags & XFRM_STATE_ESN) {
		/* Attach seqhi sg right after packet payload */
		*seqhi = XFRM_SKB_CB(skb)->seq.input.hi;
		sg_set_buf(seqhisg, seqhi, seqhi_len);
	}
	ahash_request_set_crypt(req, sg, icv, skb->len + seqhi_len);
	ahash_request_set_callback(req, 0, ah_input_done, skb);

	AH_SKB_CB(skb)->tmp = work_iph;

	err = crypto_ahash_digest(req);
	if (err) {
		if (err == -EINPROGRESS)
			goto out;

		goto out_free;
	}

	err = crypto_memneq(icv, auth_data, ahp->icv_trunc_len) ? -EBADMSG : 0;
	if (err)
		goto out_free;

	skb->network_header += ah_hlen;
	memcpy(skb_network_header(skb), work_iph, ihl);
	__skb_pull(skb, ah_hlen + ihl);
	if (x->props.mode == XFRM_MODE_TUNNEL)
		skb_reset_transport_header(skb);
	else
		skb_set_transport_header(skb, -ihl);

	err = nexthdr;

out_free:
	kfree (work_iph);
out:
	return err;
}

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237
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Alexey Kuznetsov
210
27.38%
1
4.17%
Fan Du
112
14.60%
1
4.17%
Nicolas Dichtel
50
6.52%
1
4.17%
Herbert Xu
47
6.13%
6
25.00%
Dang Hongwu
25
3.26%
1
4.17%
James Morris
24
3.13%
1
4.17%
Li RongQing
16
2.09%
1
4.17%
Jason A. Donenfeld
14
1.83%
1
4.17%
Arnaldo Carvalho de Melo
11
1.43%
3
12.50%
David S. Miller
9
1.17%
2
8.33%
Hideaki Yoshifuji / 吉藤英明
8
1.04%
1
4.17%
Pravin B Shelar
1
0.13%
1
4.17%
Sabrina Dubroca
1
0.13%
1
4.17%
Patrick McHardy
1
0.13%
1
4.17%
Al Viro
1
0.13%
1
4.17%
Total
767
100.00%
24
100.00%



static int ah4_err(struct sk_buff *skb, u32 info)
{
	struct net *net = dev_net(skb->dev);
	const struct iphdr *iph = (const struct iphdr *)skb->data;
	struct ip_auth_hdr *ah = (struct ip_auth_hdr *)(skb->data+(iph->ihl<<2));
	struct xfrm_state *x;

	switch (icmp_hdr(skb)->type) {
	case ICMP_DEST_UNREACH:
		if (icmp_hdr(skb)->code != ICMP_FRAG_NEEDED)
			return 0;
	case ICMP_REDIRECT:
		break;
	default:
		return 0;
	}

	x = xfrm_state_lookup(net, skb->mark, (const xfrm_address_t *)&iph->daddr,
			      ah->spi, IPPROTO_AH, AF_INET);
	if (!x)
		return 0;

	if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH)
		ipv4_update_pmtu(skb, net, info, 0, 0, IPPROTO_AH, 0);
	else
		ipv4_redirect(skb, net, 0, 0, IPPROTO_AH, 0);
	xfrm_state_put(x);

	return 0;
}

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Alexey Kuznetsov
93
47.45%
1
9.09%
David S. Miller
54
27.55%
2
18.18%
Alexey Dobriyan
14
7.14%
2
18.18%
Steffen Klassert
13
6.63%
1
9.09%
Hideaki Yoshifuji / 吉藤英明
8
4.08%
1
9.09%
Arnaldo Carvalho de Melo
6
3.06%
1
9.09%
Jamal Hadi Salim
4
2.04%
1
9.09%
Eric Dumazet
3
1.53%
1
9.09%
Patrick McHardy
1
0.51%
1
9.09%
Total
196
100.00%
11
100.00%



static int ah_init_state(struct xfrm_state *x)
{
	struct ah_data *ahp = NULL;
	struct xfrm_algo_desc *aalg_desc;
	struct crypto_ahash *ahash;

	if (!x->aalg)
		goto error;

	if (x->encap)
		goto error;

	ahp = kzalloc(sizeof(*ahp), GFP_KERNEL);
	if (!ahp)
		return -ENOMEM;

	ahash = crypto_alloc_ahash(x->aalg->alg_name, 0, 0);
	if (IS_ERR(ahash))
		goto error;

	ahp->ahash = ahash;
	if (crypto_ahash_setkey(ahash, x->aalg->alg_key,
				(x->aalg->alg_key_len + 7) / 8))
		goto error;

	/*
         * Lookup the algorithm description maintained by xfrm_algo,
         * verify crypto transform properties, and store information
         * we need for AH processing.  This lookup cannot fail here
         * after a successful crypto_alloc_ahash().
         */
	aalg_desc = xfrm_aalg_get_byname(x->aalg->alg_name, 0);
	BUG_ON(!aalg_desc);

	if (aalg_desc->uinfo.auth.icv_fullbits/8 !=
	    crypto_ahash_digestsize(ahash)) {
		pr_info("%s: %s digestsize %u != %hu\n",
			__func__, x->aalg->alg_name,
			crypto_ahash_digestsize(ahash),
			aalg_desc->uinfo.auth.icv_fullbits / 8);
		goto error;
	}

	ahp->icv_full_len = aalg_desc->uinfo.auth.icv_fullbits/8;
	ahp->icv_trunc_len = x->aalg->alg_trunc_len/8;

	if (x->props.flags & XFRM_STATE_ALIGN4)
		x->props.header_len = XFRM_ALIGN4(sizeof(struct ip_auth_hdr) +
						  ahp->icv_trunc_len);
	else
		x->props.header_len = XFRM_ALIGN8(sizeof(struct ip_auth_hdr) +
						  ahp->icv_trunc_len);
	if (x->props.mode == XFRM_MODE_TUNNEL)
		x->props.header_len += sizeof(struct iphdr);
	x->data = ahp;

	return 0;

error:
	if (ahp) {
		crypto_free_ahash(ahp->ahash);
		kfree(ahp);
	}
	return -EINVAL;
}

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5.88%
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85
25.91%
1
5.88%
Herbert Xu
54
16.46%
5
29.41%
Nicolas Dichtel
30
9.15%
1
5.88%
Steffen Klassert
18
5.49%
1
5.88%
David S. Miller
10
3.05%
1
5.88%
Hideaki Yoshifuji / 吉藤英明
6
1.83%
1
5.88%
Tom Lendacky
5
1.52%
1
5.88%
Martin Willi
4
1.22%
1
5.88%
Joe Perches
4
1.22%
2
11.76%
Masahide Nakamura
2
0.61%
1
5.88%
Panagiotis Issaris
1
0.30%
1
5.88%
Total
328
100.00%
17
100.00%



static void ah_destroy(struct xfrm_state *x)
{
	struct ah_data *ahp = x->data;

	if (!ahp)
		return;

	crypto_free_ahash(ahp->ahash);
	kfree(ahp);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Alexey Kuznetsov
26
68.42%
1
20.00%
James Morris
6
15.79%
2
40.00%
Herbert Xu
4
10.53%
1
20.00%
Steffen Klassert
2
5.26%
1
20.00%
Total
38
100.00%
5
100.00%



static int ah4_rcv_cb(struct sk_buff *skb, int err)
{
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Steffen Klassert
17
100.00%
1
100.00%
Total
17
100.00%
1
100.00%


static const struct xfrm_type ah_type =
{
	.description	= "AH4",
	.owner		= THIS_MODULE,
	.proto	     	= IPPROTO_AH,
	.flags		= XFRM_TYPE_REPLAY_PROT,
	.init_state	= ah_init_state,
	.destructor	= ah_destroy,
	.input		= ah_input,
	.output		= ah_output
};


static struct xfrm4_protocol ah4_protocol = {
	.handler	=	xfrm4_rcv,
	.input_handler	=	xfrm_input,
	.cb_handler	=	ah4_rcv_cb,
	.err_handler	=	ah4_err,
	.priority	=	0,
};



static int __init ah4_init(void)
{
	if (xfrm_register_type(&ah_type, AF_INET) < 0) {
		pr_info("%s: can't add xfrm type\n", __func__);
		return -EAGAIN;
	}
	if (xfrm4_protocol_register(&ah4_protocol, IPPROTO_AH) < 0) {
		pr_info("%s: can't add protocol\n", __func__);
		xfrm_unregister_type(&ah_type, AF_INET);
		return -EAGAIN;
	}
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Alexey Kuznetsov
56
80.00%
2
33.33%
Joe Perches
8
11.43%
1
16.67%
Hideaki Yoshifuji / 吉藤英明
4
5.71%
1
16.67%
Steffen Klassert
1
1.43%
1
16.67%
James Morris
1
1.43%
1
16.67%
Total
70
100.00%
6
100.00%



static void __exit ah4_fini(void)
{
	if (xfrm4_protocol_deregister(&ah4_protocol, IPPROTO_AH) < 0)
		pr_info("%s: can't remove protocol\n", __func__);
	if (xfrm_unregister_type(&ah_type, AF_INET) < 0)
		pr_info("%s: can't remove xfrm type\n", __func__);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Alexey Kuznetsov
36
76.60%
2
40.00%
Joe Perches
8
17.02%
1
20.00%
Hideaki Yoshifuji / 吉藤英明
2
4.26%
1
20.00%
Steffen Klassert
1
2.13%
1
20.00%
Total
47
100.00%
5
100.00%


module_init(ah4_init);

module_exit(ah4_fini);
MODULE_LICENSE("GPL");
MODULE_ALIAS_XFRM_TYPE(AF_INET, XFRM_PROTO_AH);
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Steffen Klassert
1361
42.07%
3
4.29%
Alexey Kuznetsov
888
27.45%
3
4.29%
Fan Du
227
7.02%
2
2.86%
Herbert Xu
199
6.15%
20
28.57%
James Morris
121
3.74%
2
2.86%
Nicolas Dichtel
114
3.52%
1
1.43%
David S. Miller
76
2.35%
6
8.57%
Li RongQing
32
0.99%
1
1.43%
Hideaki Yoshifuji / 吉藤英明
30
0.93%
2
2.86%
Jason A. Donenfeld
28
0.87%
1
1.43%
Joe Perches
27
0.83%
2
2.86%
Dang Hongwu
25
0.77%
1
1.43%
Arnaldo Carvalho de Melo
20
0.62%
5
7.14%
Alexey Dobriyan
17
0.53%
2
2.86%
Tom Lendacky
12
0.37%
1
1.43%
Masahide Nakamura
9
0.28%
2
2.86%
Gilad Ben-Yossef
8
0.25%
2
2.86%
Nick Bowler
6
0.19%
1
1.43%
Jamal Hadi Salim
6
0.19%
2
2.86%
Sabrina Dubroca
5
0.15%
1
1.43%
Rusty Russell
5
0.15%
1
1.43%
Eric Dumazet
5
0.15%
2
2.86%
Martin Willi
4
0.12%
1
1.43%
Tejun Heo
3
0.09%
1
1.43%
Al Viro
2
0.06%
1
1.43%
Patrick McHardy
2
0.06%
1
1.43%
Pravin B Shelar
1
0.03%
1
1.43%
Panagiotis Issaris
1
0.03%
1
1.43%
Paul Moore
1
0.03%
1
1.43%
Total
3235
100.00%
70
100.00%
Directory: net/ipv4

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