From: David Hardeman Date: Sat, 17 Sep 2005 07:55:31 +0000 (+1000) Subject: [PATCH] Use sg_set_buf/sg_init_one where applicable X-Git-Tag: v2.6.15-rc1~730^2^2^2~2 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=378f058cc49bcda7fa63d3cd86d2f9a0a5188b1c;p=linux-2.6 [PATCH] Use sg_set_buf/sg_init_one where applicable This patch uses sg_set_buf/sg_init_one in some places where it was duplicated. Signed-off-by: David Hardeman Cc: James Bottomley Cc: Greg KH Cc: "David S. Miller" Cc: Jeff Garzik Signed-off-by: Andrew Morton Signed-off-by: Herbert Xu --- diff --git a/crypto/hmac.c b/crypto/hmac.c index da0456b371..46120dee5a 100644 --- a/crypto/hmac.c +++ b/crypto/hmac.c @@ -18,18 +18,15 @@ #include #include #include -#include +#include #include "internal.h" static void hash_key(struct crypto_tfm *tfm, u8 *key, unsigned int keylen) { struct scatterlist tmp; - tmp.page = virt_to_page(key); - tmp.offset = offset_in_page(key); - tmp.length = keylen; + sg_set_buf(&tmp, key, keylen); crypto_digest_digest(tfm, &tmp, 1, key); - } int crypto_alloc_hmac_block(struct crypto_tfm *tfm) @@ -69,9 +66,7 @@ void crypto_hmac_init(struct crypto_tfm *tfm, u8 *key, unsigned int *keylen) for (i = 0; i < crypto_tfm_alg_blocksize(tfm); i++) ipad[i] ^= 0x36; - tmp.page = virt_to_page(ipad); - tmp.offset = offset_in_page(ipad); - tmp.length = crypto_tfm_alg_blocksize(tfm); + sg_set_buf(&tmp, ipad, crypto_tfm_alg_blocksize(tfm)); crypto_digest_init(tfm); crypto_digest_update(tfm, &tmp, 1); @@ -103,16 +98,12 @@ void crypto_hmac_final(struct crypto_tfm *tfm, u8 *key, for (i = 0; i < crypto_tfm_alg_blocksize(tfm); i++) opad[i] ^= 0x5c; - tmp.page = virt_to_page(opad); - tmp.offset = offset_in_page(opad); - tmp.length = crypto_tfm_alg_blocksize(tfm); + sg_set_buf(&tmp, opad, crypto_tfm_alg_blocksize(tfm)); crypto_digest_init(tfm); crypto_digest_update(tfm, &tmp, 1); - tmp.page = virt_to_page(out); - tmp.offset = offset_in_page(out); - tmp.length = crypto_tfm_alg_digestsize(tfm); + sg_set_buf(&tmp, out, crypto_tfm_alg_digestsize(tfm)); crypto_digest_update(tfm, &tmp, 1); crypto_digest_final(tfm, out); diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c index 68639419c5..577a3aff31 100644 --- a/crypto/tcrypt.c +++ b/crypto/tcrypt.c @@ -21,7 +21,7 @@ #include #include #include -#include +#include #include #include #include @@ -86,7 +86,6 @@ static void hexdump(unsigned char *buf, unsigned int len) static void test_hash(char *algo, struct hash_testvec *template, unsigned int tcount) { - char *p; unsigned int i, j, k, temp; struct scatterlist sg[8]; char result[64]; @@ -116,10 +115,7 @@ static void test_hash(char *algo, struct hash_testvec *template, printk("test %u:\n", i + 1); memset(result, 0, 64); - p = hash_tv[i].plaintext; - sg[0].page = virt_to_page(p); - sg[0].offset = offset_in_page(p); - sg[0].length = hash_tv[i].psize; + sg_set_buf(&sg[0], hash_tv[i].plaintext, hash_tv[i].psize); crypto_digest_init(tfm); if (tfm->crt_u.digest.dit_setkey) { @@ -154,10 +150,8 @@ static void test_hash(char *algo, struct hash_testvec *template, hash_tv[i].plaintext + temp, hash_tv[i].tap[k]); temp += hash_tv[i].tap[k]; - p = &xbuf[IDX[k]]; - sg[k].page = virt_to_page(p); - sg[k].offset = offset_in_page(p); - sg[k].length = hash_tv[i].tap[k]; + sg_set_buf(&sg[k], &xbuf[IDX[k]], + hash_tv[i].tap[k]); } crypto_digest_digest(tfm, sg, hash_tv[i].np, result); @@ -179,7 +173,6 @@ static void test_hash(char *algo, struct hash_testvec *template, static void test_hmac(char *algo, struct hmac_testvec *template, unsigned int tcount) { - char *p; unsigned int i, j, k, temp; struct scatterlist sg[8]; char result[64]; @@ -210,11 +203,8 @@ static void test_hmac(char *algo, struct hmac_testvec *template, printk("test %u:\n", i + 1); memset(result, 0, sizeof (result)); - p = hmac_tv[i].plaintext; klen = hmac_tv[i].ksize; - sg[0].page = virt_to_page(p); - sg[0].offset = offset_in_page(p); - sg[0].length = hmac_tv[i].psize; + sg_set_buf(&sg[0], hmac_tv[i].plaintext, hmac_tv[i].psize); crypto_hmac(tfm, hmac_tv[i].key, &klen, sg, 1, result); @@ -243,10 +233,8 @@ static void test_hmac(char *algo, struct hmac_testvec *template, hmac_tv[i].plaintext + temp, hmac_tv[i].tap[k]); temp += hmac_tv[i].tap[k]; - p = &xbuf[IDX[k]]; - sg[k].page = virt_to_page(p); - sg[k].offset = offset_in_page(p); - sg[k].length = hmac_tv[i].tap[k]; + sg_set_buf(&sg[k], &xbuf[IDX[k]], + hmac_tv[i].tap[k]); } crypto_hmac(tfm, hmac_tv[i].key, &klen, sg, @@ -270,7 +258,7 @@ static void test_cipher(char *algo, int mode, int enc, { unsigned int ret, i, j, k, temp; unsigned int tsize; - char *p, *q; + char *q; struct crypto_tfm *tfm; char *key; struct cipher_testvec *cipher_tv; @@ -330,10 +318,8 @@ static void test_cipher(char *algo, int mode, int enc, goto out; } - p = cipher_tv[i].input; - sg[0].page = virt_to_page(p); - sg[0].offset = offset_in_page(p); - sg[0].length = cipher_tv[i].ilen; + sg_set_buf(&sg[0], cipher_tv[i].input, + cipher_tv[i].ilen); if (!mode) { crypto_cipher_set_iv(tfm, cipher_tv[i].iv, @@ -389,10 +375,8 @@ static void test_cipher(char *algo, int mode, int enc, cipher_tv[i].input + temp, cipher_tv[i].tap[k]); temp += cipher_tv[i].tap[k]; - p = &xbuf[IDX[k]]; - sg[k].page = virt_to_page(p); - sg[k].offset = offset_in_page(p); - sg[k].length = cipher_tv[i].tap[k]; + sg_set_buf(&sg[k], &xbuf[IDX[k]], + cipher_tv[i].tap[k]); } if (!mode) { @@ -436,9 +420,7 @@ static int test_cipher_jiffies(struct crypto_tfm *tfm, int enc, char *p, int bcount; int ret; - sg[0].page = virt_to_page(p); - sg[0].offset = offset_in_page(p); - sg[0].length = blen; + sg_set_buf(&sg[0], p, blen); for (start = jiffies, end = start + sec * HZ, bcount = 0; time_before(jiffies, end); bcount++) { @@ -464,9 +446,7 @@ static int test_cipher_cycles(struct crypto_tfm *tfm, int enc, char *p, int ret = 0; int i; - sg[0].page = virt_to_page(p); - sg[0].offset = offset_in_page(p); - sg[0].length = blen; + sg_set_buf(&sg[0], p, blen); local_bh_disable(); local_irq_disable(); @@ -709,9 +689,7 @@ static void test_crc32c(void) for (i = 0; i < NUMVEC; i++) { for (j = 0; j < VECSIZE; j++) test_vec[i][j] = ++b; - sg[i].page = virt_to_page(test_vec[i]); - sg[i].offset = offset_in_page(test_vec[i]); - sg[i].length = VECSIZE; + sg_set_buf(&sg[i], test_vec[i], VECSIZE); } seed = SEEDTESTVAL; diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 28c1a62862..cf66310566 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -15,7 +15,7 @@ #include #include #include -#include +#include #include #include "dm.h" @@ -164,9 +164,7 @@ static int crypt_iv_essiv_ctr(struct crypt_config *cc, struct dm_target *ti, return -ENOMEM; } - sg.page = virt_to_page(cc->key); - sg.offset = offset_in_page(cc->key); - sg.length = cc->key_size; + sg_set_buf(&sg, cc->key, cc->key_size); crypto_digest_digest(hash_tfm, &sg, 1, salt); crypto_free_tfm(hash_tfm); @@ -207,14 +205,12 @@ static void crypt_iv_essiv_dtr(struct crypt_config *cc) static int crypt_iv_essiv_gen(struct crypt_config *cc, u8 *iv, sector_t sector) { - struct scatterlist sg = { NULL, }; + struct scatterlist sg; memset(iv, 0, cc->iv_size); *(u64 *)iv = cpu_to_le64(sector); - sg.page = virt_to_page(iv); - sg.offset = offset_in_page(iv); - sg.length = cc->iv_size; + sg_set_buf(&sg, iv, cc->iv_size); crypto_cipher_encrypt((struct crypto_tfm *)cc->iv_gen_private, &sg, &sg, cc->iv_size); diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c index 4c11699bad..1609ce1138 100644 --- a/drivers/net/wireless/airo.c +++ b/drivers/net/wireless/airo.c @@ -35,6 +35,7 @@ #include #include #include +#include #include #include @@ -1590,9 +1591,7 @@ static void emmh32_setseed(emmh32_context *context, u8 *pkey, int keylen, struct aes_counter[12] = (u8)(counter >> 24); counter++; memcpy (plain, aes_counter, 16); - sg[0].page = virt_to_page(plain); - sg[0].offset = ((long) plain & ~PAGE_MASK); - sg[0].length = 16; + sg_set_buf(&sg[0], plain, 16); crypto_cipher_encrypt(tfm, sg, sg, 16); cipher = kmap(sg[0].page) + sg[0].offset; for (j=0; (j<16) && (i< (sizeof(context->coeff)/sizeof(context->coeff[0]))); ) { diff --git a/drivers/scsi/arm/scsi.h b/drivers/scsi/arm/scsi.h index 48e1c4d973..19937640e2 100644 --- a/drivers/scsi/arm/scsi.h +++ b/drivers/scsi/arm/scsi.h @@ -10,6 +10,8 @@ * Commonly used scsi driver functions. */ +#include + #define BELT_AND_BRACES /* @@ -22,9 +24,7 @@ static inline int copy_SCp_to_sg(struct scatterlist *sg, Scsi_Pointer *SCp, int BUG_ON(bufs + 1 > max); - sg->page = virt_to_page(SCp->ptr); - sg->offset = offset_in_page(SCp->ptr); - sg->length = SCp->this_residual; + sg_set_buf(sg, SCp->ptr, SCp->this_residual); if (bufs) memcpy(sg + 1, SCp->buffer + 1, diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index b1b1c6f014..5ca97605ff 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -49,6 +49,7 @@ #include #include #include +#include #include #include "scsi.h" #include "scsi_priv.h" @@ -2576,19 +2577,12 @@ void ata_qc_prep(struct ata_queued_cmd *qc) void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen) { - struct scatterlist *sg; - qc->flags |= ATA_QCFLAG_SINGLE; - memset(&qc->sgent, 0, sizeof(qc->sgent)); qc->sg = &qc->sgent; qc->n_elem = 1; qc->buf_virt = buf; - - sg = qc->sg; - sg->page = virt_to_page(buf); - sg->offset = (unsigned long) buf & ~PAGE_MASK; - sg->length = buflen; + sg_init_one(qc->sg, buf, buflen); } /** diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 861e51375d..07fee811c0 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -49,6 +49,7 @@ static int sg_version_num = 30533; /* 2 digits for each component */ #include #include #include +#include #include "scsi.h" #include @@ -1992,9 +1993,7 @@ sg_build_indirect(Sg_scatter_hold * schp, Sg_fd * sfp, int buff_size) if (!p) break; } - sclp->page = virt_to_page(p); - sclp->offset = offset_in_page(p); - sclp->length = ret_sz; + sg_set_buf(sclp, p, ret_sz); SCSI_LOG_TIMEOUT(5, printk("sg_build_build: k=%d, a=0x%p, len=%d\n", k, sg_scatg2virt(sclp), ret_sz)); diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index 90a96257d6..2997f55815 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -9,7 +9,7 @@ #include #include #include -#include +#include #include @@ -381,7 +381,6 @@ alloc_sglist (int nents, int max, int vary) sg = kmalloc (nents * sizeof *sg, SLAB_KERNEL); if (!sg) return NULL; - memset (sg, 0, nents * sizeof *sg); for (i = 0; i < nents; i++) { char *buf; @@ -394,9 +393,7 @@ alloc_sglist (int nents, int max, int vary) memset (buf, 0, size); /* kmalloc pages are always physically contiguous! */ - sg [i].page = virt_to_page (buf); - sg [i].offset = offset_in_page (buf); - sg [i].length = size; + sg_init_one(&sg[i], buf, size); if (vary) { size += vary; diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index a970b4727c..41edc14851 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -75,7 +75,7 @@ #ifdef CONFIG_IPV6_PRIVACY #include #include -#include +#include #endif #include @@ -1217,12 +1217,8 @@ static int __ipv6_regen_rndid(struct inet6_dev *idev) struct net_device *dev; struct scatterlist sg[2]; - sg[0].page = virt_to_page(idev->entropy); - sg[0].offset = offset_in_page(idev->entropy); - sg[0].length = 8; - sg[1].page = virt_to_page(idev->work_eui64); - sg[1].offset = offset_in_page(idev->work_eui64); - sg[1].length = 8; + sg_set_buf(&sg[0], idev->entropy, 8); + sg_set_buf(&sg[1], idev->work_eui64, 8); dev = idev->dev; diff --git a/net/sunrpc/auth_gss/gss_krb5_crypto.c b/net/sunrpc/auth_gss/gss_krb5_crypto.c index 3f3d5437f0..e65e1f9792 100644 --- a/net/sunrpc/auth_gss/gss_krb5_crypto.c +++ b/net/sunrpc/auth_gss/gss_krb5_crypto.c @@ -37,7 +37,7 @@ #include #include #include -#include +#include #include #include #include @@ -75,9 +75,7 @@ krb5_encrypt( memcpy(local_iv, iv, crypto_tfm_alg_ivsize(tfm)); memcpy(out, in, length); - sg[0].page = virt_to_page(out); - sg[0].offset = offset_in_page(out); - sg[0].length = length; + sg_set_buf(&sg[0], out, length); ret = crypto_cipher_encrypt_iv(tfm, sg, sg, length, local_iv); @@ -117,9 +115,7 @@ krb5_decrypt( memcpy(local_iv,iv, crypto_tfm_alg_ivsize(tfm)); memcpy(out, in, length); - sg[0].page = virt_to_page(out); - sg[0].offset = offset_in_page(out); - sg[0].length = length; + sg_set_buf(&sg[0], out, length); ret = crypto_cipher_decrypt_iv(tfm, sg, sg, length, local_iv); @@ -132,13 +128,6 @@ out: EXPORT_SYMBOL(krb5_decrypt); -static void -buf_to_sg(struct scatterlist *sg, char *ptr, int len) { - sg->page = virt_to_page(ptr); - sg->offset = offset_in_page(ptr); - sg->length = len; -} - static int process_xdr_buf(struct xdr_buf *buf, int offset, int len, int (*actor)(struct scatterlist *, void *), void *data) @@ -152,7 +141,7 @@ process_xdr_buf(struct xdr_buf *buf, int offset, int len, thislen = buf->head[0].iov_len - offset; if (thislen > len) thislen = len; - buf_to_sg(sg, buf->head[0].iov_base + offset, thislen); + sg_set_buf(sg, buf->head[0].iov_base + offset, thislen); ret = actor(sg, data); if (ret) goto out; @@ -195,7 +184,7 @@ process_xdr_buf(struct xdr_buf *buf, int offset, int len, thislen = buf->tail[0].iov_len - offset; if (thislen > len) thislen = len; - buf_to_sg(sg, buf->tail[0].iov_base + offset, thislen); + sg_set_buf(sg, buf->tail[0].iov_base + offset, thislen); ret = actor(sg, data); len -= thislen; } @@ -241,7 +230,7 @@ make_checksum(s32 cksumtype, char *header, int hdrlen, struct xdr_buf *body, goto out; crypto_digest_init(tfm); - buf_to_sg(sg, header, hdrlen); + sg_set_buf(sg, header, hdrlen); crypto_digest_update(tfm, sg, 1); process_xdr_buf(body, body_offset, body->len - body_offset, checksummer, tfm);