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-rw-r--r--drivers/net/wireless/orinoco/fw.c12
-rw-r--r--drivers/net/wireless/orinoco/hermes_dld.c99
-rw-r--r--drivers/net/wireless/orinoco/hermes_dld.h12
3 files changed, 67 insertions, 56 deletions
diff --git a/drivers/net/wireless/orinoco/fw.c b/drivers/net/wireless/orinoco/fw.c
index 9f163feb936..e7abb45d675 100644
--- a/drivers/net/wireless/orinoco/fw.c
+++ b/drivers/net/wireless/orinoco/fw.c
@@ -83,7 +83,7 @@ orinoco_dl_firmware(struct orinoco_private *priv,
const struct firmware *fw_entry;
const struct orinoco_fw_header *hdr;
const unsigned char *first_block;
- const unsigned char *end;
+ const void *end;
const char *firmware;
const char *fw_err;
struct net_device *dev = priv->ndev;
@@ -152,7 +152,8 @@ orinoco_dl_firmware(struct orinoco_private *priv,
le16_to_cpu(hdr->headersize) +
le32_to_cpu(hdr->pdr_offset));
- err = hermes_apply_pda_with_defaults(hw, first_block, pda);
+ err = hermes_apply_pda_with_defaults(hw, first_block, end, pda,
+ &pda[fw->pda_size / sizeof(*pda)]);
printk(KERN_DEBUG "%s: Apply PDA returned %d\n", dev->name, err);
if (err)
goto abort;
@@ -184,7 +185,7 @@ free:
*/
static int
symbol_dl_image(struct orinoco_private *priv, const struct fw_info *fw,
- const unsigned char *image, const unsigned char *end,
+ const unsigned char *image, const void *end,
int secondary)
{
hermes_t *hw = &priv->hw;
@@ -225,9 +226,10 @@ symbol_dl_image(struct orinoco_private *priv, const struct fw_info *fw,
/* Write the PDA to the adapter */
if (secondary) {
- size_t len = hermes_blocks_length(first_block);
+ size_t len = hermes_blocks_length(first_block, end);
ptr = first_block + len;
- ret = hermes_apply_pda(hw, ptr, pda);
+ ret = hermes_apply_pda(hw, ptr, end, pda,
+ &pda[fw->pda_size / sizeof(*pda)]);
kfree(pda);
if (ret)
return ret;
diff --git a/drivers/net/wireless/orinoco/hermes_dld.c b/drivers/net/wireless/orinoco/hermes_dld.c
index 5260ceb5cfe..a9ba195cdad 100644
--- a/drivers/net/wireless/orinoco/hermes_dld.c
+++ b/drivers/net/wireless/orinoco/hermes_dld.c
@@ -71,18 +71,6 @@
#define BLOCK_END 0xFFFFFFFF /* Last image block */
#define TEXT_END 0x1A /* End of text header */
-/*
- * PDA == Production Data Area
- *
- * In principle, the max. size of the PDA is is 4096 words. Currently,
- * however, only about 500 bytes of this area are used.
- *
- * Some USB implementations can't handle sizes in excess of 1016. Note
- * that PDA is not actually used in those USB environments, but may be
- * retrieved by common code.
- */
-#define MAX_PDA_SIZE 1000
-
/* Limit the amout we try to download in a single shot.
* Size is in bytes.
*/
@@ -218,13 +206,14 @@ hermes_aux_control(hermes_t *hw, int enabled)
* Scan PDR for the record with the specified RECORD_ID.
* If it's not found, return NULL.
*/
-static struct pdr *
-hermes_find_pdr(struct pdr *first_pdr, u32 record_id)
+static const struct pdr *
+hermes_find_pdr(const struct pdr *first_pdr, u32 record_id, const void *end)
{
- struct pdr *pdr = first_pdr;
- void *end = (void *)first_pdr + MAX_PDA_SIZE;
+ const struct pdr *pdr = first_pdr;
- while (((void *)pdr < end) &&
+ end -= sizeof(struct pdr);
+
+ while (((void *) pdr <= end) &&
(pdr_id(pdr) != PDI_END)) {
/*
* PDR area is currently not terminated by PDI_END.
@@ -244,12 +233,15 @@ hermes_find_pdr(struct pdr *first_pdr, u32 record_id)
}
/* Scan production data items for a particular entry */
-static struct pdi *
-hermes_find_pdi(struct pdi *first_pdi, u32 record_id)
+static const struct pdi *
+hermes_find_pdi(const struct pdi *first_pdi, u32 record_id, const void *end)
{
- struct pdi *pdi = first_pdi;
+ const struct pdi *pdi = first_pdi;
+
+ end -= sizeof(struct pdi);
- while (pdi_id(pdi) != PDI_END) {
+ while (((void *) pdi <= end) &&
+ (pdi_id(pdi) != PDI_END)) {
/* If the record ID matches, we are done */
if (pdi_id(pdi) == record_id)
@@ -262,12 +254,13 @@ hermes_find_pdi(struct pdi *first_pdi, u32 record_id)
/* Process one Plug Data Item - find corresponding PDR and plug it */
static int
-hermes_plug_pdi(hermes_t *hw, struct pdr *first_pdr, const struct pdi *pdi)
+hermes_plug_pdi(hermes_t *hw, const struct pdr *first_pdr,
+ const struct pdi *pdi, const void *pdr_end)
{
- struct pdr *pdr;
+ const struct pdr *pdr;
/* Find the PDR corresponding to this PDI */
- pdr = hermes_find_pdr(first_pdr, pdi_id(pdi));
+ pdr = hermes_find_pdr(first_pdr, pdi_id(pdi), pdr_end);
/* No match is found, safe to ignore */
if (!pdr)
@@ -345,18 +338,22 @@ int hermes_read_pda(hermes_t *hw,
*/
int hermes_apply_pda(hermes_t *hw,
const char *first_pdr,
- const __le16 *pda)
+ const void *pdr_end,
+ const __le16 *pda,
+ const void *pda_end)
{
int ret;
const struct pdi *pdi;
- struct pdr *pdr;
+ const struct pdr *pdr;
- pdr = (struct pdr *) first_pdr;
+ pdr = (const struct pdr *) first_pdr;
+ pda_end -= sizeof(struct pdi);
/* Go through every PDI and plug them into the adapter */
pdi = (const struct pdi *) (pda + 2);
- while (pdi_id(pdi) != PDI_END) {
- ret = hermes_plug_pdi(hw, pdr, pdi);
+ while (((void *) pdi <= pda_end) &&
+ (pdi_id(pdi) != PDI_END)) {
+ ret = hermes_plug_pdi(hw, pdr, pdi, pdr_end);
if (ret)
return ret;
@@ -370,15 +367,18 @@ int hermes_apply_pda(hermes_t *hw,
* including the header data.
*/
size_t
-hermes_blocks_length(const char *first_block)
+hermes_blocks_length(const char *first_block, const void *end)
{
const struct dblock *blk = (const struct dblock *) first_block;
int total_len = 0;
int len;
+ end -= sizeof(*blk);
+
/* Skip all blocks to locate Plug Data References
* (Spectrum CS) */
- while (dblock_addr(blk) != BLOCK_END) {
+ while (((void *) blk <= end) &&
+ (dblock_addr(blk) != BLOCK_END)) {
len = dblock_len(blk);
total_len += sizeof(*blk) + len;
blk = (struct dblock *) &blk->data[len];
@@ -476,7 +476,7 @@ int hermesi_program_end(hermes_t *hw)
}
/* Program the data blocks */
-int hermes_program(hermes_t *hw, const char *first_block, const char *end)
+int hermes_program(hermes_t *hw, const char *first_block, const void *end)
{
const struct dblock *blk;
u32 blkaddr;
@@ -488,14 +488,14 @@ int hermes_program(hermes_t *hw, const char *first_block, const char *end)
blk = (const struct dblock *) first_block;
- if ((const char *) blk > (end - sizeof(*blk)))
+ if ((void *) blk > (end - sizeof(*blk)))
return -EIO;
blkaddr = dblock_addr(blk);
blklen = dblock_len(blk);
while ((blkaddr != BLOCK_END) &&
- (((const char *) blk + blklen) <= end)) {
+ (((void *) blk + blklen) <= end)) {
printk(KERN_DEBUG PFX
"Programming block of length %d to address 0x%08x\n",
blklen, blkaddr);
@@ -527,7 +527,7 @@ int hermes_program(hermes_t *hw, const char *first_block, const char *end)
#endif
blk = (const struct dblock *) &blk->data[blklen];
- if ((const char *) blk > (end - sizeof(*blk)))
+ if ((void *) blk > (end - sizeof(*blk)))
return -EIO;
blkaddr = dblock_addr(blk);
@@ -545,9 +545,9 @@ static const struct { \
__le16 id; \
u8 val[length]; \
} __attribute__ ((packed)) default_pdr_data_##pid = { \
- cpu_to_le16((sizeof(default_pdr_data_##pid)/ \
+ cpu_to_le16((sizeof(default_pdr_data_##pid)/ \
sizeof(__le16)) - 1), \
- cpu_to_le16(pid), \
+ cpu_to_le16(pid), \
data \
}
@@ -616,17 +616,20 @@ DEFINE_DEFAULT_PDR(0x0161, 256,
*/
int hermes_apply_pda_with_defaults(hermes_t *hw,
const char *first_pdr,
- const __le16 *pda)
+ const void *pdr_end,
+ const __le16 *pda,
+ const void *pda_end)
{
const struct pdr *pdr = (const struct pdr *) first_pdr;
- struct pdi *first_pdi = (struct pdi *) &pda[2];
- struct pdi *pdi;
- struct pdi *default_pdi = NULL;
- struct pdi *outdoor_pdi;
- void *end = (void *)first_pdr + MAX_PDA_SIZE;
+ const struct pdi *first_pdi = (const struct pdi *) &pda[2];
+ const struct pdi *pdi;
+ const struct pdi *default_pdi = NULL;
+ const struct pdi *outdoor_pdi;
int record_id;
- while (((void *)pdr < end) &&
+ pdr_end -= sizeof(struct pdr);
+
+ while (((void *) pdr <= pdr_end) &&
(pdr_id(pdr) != PDI_END)) {
/*
* For spectrum_cs firmwares,
@@ -638,7 +641,7 @@ int hermes_apply_pda_with_defaults(hermes_t *hw,
break;
record_id = pdr_id(pdr);
- pdi = hermes_find_pdi(first_pdi, record_id);
+ pdi = hermes_find_pdi(first_pdi, record_id, pda_end);
if (pdi)
printk(KERN_DEBUG PFX "Found record 0x%04x at %p\n",
record_id, pdi);
@@ -646,7 +649,8 @@ int hermes_apply_pda_with_defaults(hermes_t *hw,
switch (record_id) {
case 0x110: /* Modem REFDAC values */
case 0x120: /* Modem VGDAC values */
- outdoor_pdi = hermes_find_pdi(first_pdi, record_id + 1);
+ outdoor_pdi = hermes_find_pdi(first_pdi, record_id + 1,
+ pda_end);
default_pdi = NULL;
if (outdoor_pdi) {
pdi = outdoor_pdi;
@@ -687,7 +691,8 @@ int hermes_apply_pda_with_defaults(hermes_t *hw,
if (pdi) {
/* Lengths of the data in PDI and PDR must match */
- if (pdi_len(pdi) == pdr_len(pdr)) {
+ if ((pdi_len(pdi) == pdr_len(pdr)) &&
+ ((void *) pdi->data + pdi_len(pdi) < pda_end)) {
/* do the actual plugging */
hermes_aux_setaddr(hw, pdr_addr(pdr));
hermes_write_bytes(hw, HERMES_AUXDATA,
diff --git a/drivers/net/wireless/orinoco/hermes_dld.h b/drivers/net/wireless/orinoco/hermes_dld.h
index 6fcb2627799..583a5bcf917 100644
--- a/drivers/net/wireless/orinoco/hermes_dld.h
+++ b/drivers/net/wireless/orinoco/hermes_dld.h
@@ -29,7 +29,7 @@
int hermesi_program_init(hermes_t *hw, u32 offset);
int hermesi_program_end(hermes_t *hw);
-int hermes_program(hermes_t *hw, const char *first_block, const char *end);
+int hermes_program(hermes_t *hw, const char *first_block, const void *end);
int hermes_read_pda(hermes_t *hw,
__le16 *pda,
@@ -38,11 +38,15 @@ int hermes_read_pda(hermes_t *hw,
int use_eeprom);
int hermes_apply_pda(hermes_t *hw,
const char *first_pdr,
- const __le16 *pda);
+ const void *pdr_end,
+ const __le16 *pda,
+ const void *pda_end);
int hermes_apply_pda_with_defaults(hermes_t *hw,
const char *first_pdr,
- const __le16 *pda);
+ const void *pdr_end,
+ const __le16 *pda,
+ const void *pda_end);
-size_t hermes_blocks_length(const char *first_block);
+size_t hermes_blocks_length(const char *first_block, const void *end);
#endif /* _HERMES_DLD_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-22 16:01:10 +0000